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Contents
- The climate of Jember
- The best time to visit Jember
- The worst time to visit Jember
- Spring weather in Jember
- Summer weather in Jember
- Autumn weather in Jember
- Winter weather in Jember
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Jember
Positioned in the tropical region, the city of Jember in Indonesia boasts a climate predominantly classified as Tropical Wet and Dry or Savanna, according to the Köppen Climate Classification. The city experiences year-round high temperatures, with minimums that never fall below the 21.3°C (70.3°F) mark, witnessed in August, and maximums that can reach up to 34.5°C (94.1°F) in October. These temperatures are fairly constant, making Jember a warm city throughout the year.
Early in the year, rainfall in Jember is notably abundant, peaking at 283mm (11.14") in March. However, this precipitation rapidly decreases, plunging to a low of 10mm (0.39") by August. The trend reverses from this point onwards, with the rainfall climbing to 209mm (8.23") in December. This variability underscores the predominantly savanna conditions prevalent in this part of Indonesia.
At the same time, relative humidity varies slightly from a peak of 86% in February to a minimum of 65% during September and October. Examining the patterns of sunlight hours, daylight, and cloud cover provides additional insight into Jember’s climate profile. Daylight hours slightly fluctuate from 11.7 hours during May, June and July to 12.6 hours in December. As for cloud cover, it follows an inverse pattern to rainfall, dropping to a low of 19% from August to October, thereby corresponding with the dry period in Jember.
Early in the year, rainfall in Jember is notably abundant, peaking at 283mm (11.14") in March. However, this precipitation rapidly decreases, plunging to a low of 10mm (0.39") by August. The trend reverses from this point onwards, with the rainfall climbing to 209mm (8.23") in December. This variability underscores the predominantly savanna conditions prevalent in this part of Indonesia.
At the same time, relative humidity varies slightly from a peak of 86% in February to a minimum of 65% during September and October. Examining the patterns of sunlight hours, daylight, and cloud cover provides additional insight into Jember’s climate profile. Daylight hours slightly fluctuate from 11.7 hours during May, June and July to 12.6 hours in December. As for cloud cover, it follows an inverse pattern to rainfall, dropping to a low of 19% from August to October, thereby corresponding with the dry period in Jember.
The best time to visit Jember
Visitors to Jember will find the period from May to September to be the most agreeable. During these months, the levels of rainfall are exceptionally low, ranging from 82mm (3.23") in May to an absolute minimum of 10mm (0.39") in August. Concurrently, the amount of sunshine is at its highest ranks, stretching from the 9.1 hours per day seen in May to a maximum of 9.7 hours in October. This combination of reduced rainfall, amplified sunshine hours, and moderated humidity constitutes optimal conditions for those planning a trip to this vibrant Indonesian city.
The worst time to visit Jember
While Jember can be pleasantly warm throughout the year, the period from January to March could be challenging for some visitors, owing to the heavy rainfall, reaching its maximal value of 283mm (11.14") in March. During these months, the city experiences fewer sunshine hours, falling to a low of 6.9 in January, and higher relative humidity, peaking at 86% in February. These conditions can result in a less comfortable and enjoyable visit.
Spring weather in Jember
In Jember, the transition from the heavy rains of early year towards more moderate conditions begins in spring. The refreshing months of March, April, and May witness a significant reduction in rainfall, from 283mm (11.14") in March to 82mm (3.23") by May. As the wet season wanes, the average maximum temperature remains relatively constant at around 30.3°C (86.5°F) to 30.8°C (87.4°F), providing pleasant warmth.
Summer weather in Jember
In the months of June, July, and August, Jember enters its dry season. These months are characterised by scant rainfall, minimal cloud cover, and abundant sunshine hours, reaching the peak of 9.4 hours in June and July. While the average minimum temperature cools slightly to 21.3°C (70.3°F) in August, the average maximum soars to a sweltering 32.1°C (89.8°F) in the same month, signifying balmy hot summer days.
Autumn weather in Jember
September, October, and November in Jember mark the onset of increasing rainfall, with totals ranging from 18mm (0.71") in September to 129mm (5.08") by November. Despite this, the city enjoys copious sunshine hours and temperature highs reach 34.5°C (94.1°F) in October - the annual peak. Nonetheless, these autumn months still provide relatively pleasant conditions for tourists.
Winter weather in Jember
During December, January, and February, Jember slips into its wet season, marked by high rainfall totals that soar up to 275mm (10.83") in February. However, even in these rain-laden months, the city remains warm with minimum temperature stabilising around 23.2°C (73.8°F) in December and 22.8°C (73°F) in February, and daylight hours replenishing to 12.6 by December. Despite the intensive rainfall, this winter period maintains warmth and sunlight characteristic of Jember’s tropical savanna climate.
Weather in January
In Jember, Indonesia, January typically begins the year with an elevated level of humidity, setting the atmospheric tone for the month. Rainfall averages at 252mm (9.92"), making it the third-highest in terms of precipitation. During this time, the skies tend to be cloudier and the visibility slightly reduced. Weather in January »
Weather in February
As January moves into February in Jember, a subtle shift in weather patterns begins to unfold. The relative humidity increases slightly to 86%, coupled with an increase in rainfall to 275mm (10.83"), suggesting more intense rainfall sessions. Weather in February »
Weather in March
March in Jember, Indonesia, ushers in a decrease in cloud cover and a slight increase in sunlight hours. Interestingly, the shift from February includes a marginal reduction in relative humidity and rainfall, leading to less saturation in the atmosphere. Weather in March »
Weather in April
April is recognized as a transitional month in Jember's weather system. It marks the beginning of a significant drop in rainfall to 179mm (7.05"), indicating the onset of the dry season. In addition to reduced rainfall, there is a noticeable increase in sunshine duration, creating a brighter atmosphere. Weather in April »
Weather in May
May in Jember, Indonesia, is marked by a significant reduction in cloud cover, precipitation, and humidity, culminating in a noticeably drier climate. Building on the weather patterns developed in April, rainfall drops drastically to 82mm (3.23"). Weather in May »
Weather in June
June in Jember maintains the trend of dry weather set in May, with a further decrease in rainfall and humidity. It highlights one of the driest times of the year, punctuated by an average of 14.2 rainy days. Excellently, the sunshine-filled days increase as the number of daylight hours remains steady. Weather in June »
Weather in July
July stands out in Jember, Indonesia, as the month with the least rainfall, clocking in only 22mm (0.87") of precipitation. The collective decrease in relative humidity, cloud cover, and rainfall mark the peak of the dry season in Jember. Weather in July »
Weather in August
In August, Jember experiences the slightest increase in rainfall to 10mm (0.39") while maintaining similar characteristics of the prior month. Currently, the highest temperature of the year is recorded, reaching up to 32.1°C (89.8°F) on the hottest days. Weather in August »
Weather in September
September ushers in a transition phase from the hot, dry August to the cooler, wetter months that follow in Jember. The rainfall begins to increase, averaging at 18mm (0.71"), providing signals towards an upcoming wet season. Weather in September »
Weather in October
The shift from a dry to a wet climate becomes particularly pronounced in October in Jember, Indonesia. A slight increase in humidity coupled with a noteworthy increase in rainfall to 43mm (1.69"), marks the return of the rainy season. Weather in October »
Weather in November
The progression into November in Jember is characterised by increased cloud cover, relative humidity, and rainfall, including the average number of rainy days soaring to 26.8. On average, temperatures experience a slight decrease, producing notably cooler days. Weather in November »
Weather in December
Jember concludes the year in December with a peak in rainfall at 209mm (8.23"), distinctly marking the highest level of precipitation through the year. Accompanying this rainfall peak, the humidity levels and cloud cover find themselves on a substantial rise. Weather in December »
Frequently asked questions
How much does it rain in Jember?
In Jember, Indonesia, during the entire year, the rain falls for 247.8 days and collects up to 1536mm (60.47") of precipitation.
What is the month with the least sunshine in Jember?
The month with the least sunshine is January, with an average of 6.9h of sunshine.
What are the months with the lowest UV index in Jember?
January and March, with an average maximum UV index of 6, are months with the lowest UV index in Jember, Indonesia.
What is the coldest time of year in Jember?
Jember's lowest temperatures tend to occur in February and March, with an average high-temperature of 29.8°C (85.6°F).
What is the most humid month in Jember?
February is the most humid month in Jember, with an average relative humidity of 86%.
What are the months with the highest UV index in Jember?
February, April through December, with an average maximum UV index of 7, are months with the highest UV index in Jember, Indonesia.
What is the rainiest month in Jember?
The month with the most rainfall is March, when the rain falls for 29.8 days and typically aggregates up to 283mm (11.14") of precipitation.
What is the month with the shortest days in Jember?
The month with the shortest days is June, with an average of 11h and 42min of daylight.
What is the driest month in Jember?
The month with the least rainfall in Jember, Indonesia, is August, when the rain falls for 6 days and typically collects 10mm (0.39") of precipitation.
What are the least humid months in Jember?
The months with the lowest humidity are September and October, with an average relative humidity of 65%.
What time of the year is the hottest in Jember?
October proves to be the warmest month, recording an average peak temperature of 34.5°C (94.1°F) and a minimum temperature of 23.6°C (74.5°F).
What month has the most sunshine in Jember?
The month with the most sunshine in Jember is October, with an average of 9.7h of sunshine.
When are the longest days in Jember?
With an average of 12h and 36min of daylight, December has the longest days of the year in Jember.
Is there Daylight Saving Time (DST) in Jember?
Jember, Indonesia, does not utilize Daylight Saving Time (DST). WIB timezone is used throughout the entire year.
Average temperature
Jember, Indonesia
The warmest month (with the highest average high temperature) is October (34.5°C).
The months with the lowest average high temperature are February and March (29.8°C).
The month with the highest average low temperature is November (24.3°C).
The coldest month (with the lowest average low temperature) is August (21.3°C).
Average pressure
Jember, Indonesia
- Average pressure in January:
1009.1mbar - Average pressure in February:
1009.5mbar - Average pressure in March:
1009.7mbar - Average pressure in April:
1009.8mbar - Average pressure in May:
1010mbar - Average pressure in June:
1010.6mbar
- Average pressure in July:
1011.1mbar - Average pressure in August:
1011.5mbar - Average pressure in September:
1011.5mbar - Average pressure in October:
1010.6mbar - Average pressure in November:
1009.3mbar - Average pressure in December:
1008.8mbar
The months with the highest atmospheric pressure are August and September (1011.5mbar).
The month with the lowest atmospheric pressure is December (1008.8mbar).
Average wind speed
Jember, Indonesia
- Average wind speed in January:
6.8km/h - Average wind speed in February:
6km/h - Average wind speed in March:
5.3km/h - Average wind speed in April:
5.1km/h - Average wind speed in May:
6.1km/h - Average wind speed in June:
6.8km/h
- Average wind speed in July:
8.2km/h - Average wind speed in August:
8.7km/h - Average wind speed in September:
8.8km/h - Average wind speed in October:
8.3km/h - Average wind speed in November:
6.5km/h - Average wind speed in December:
6.6km/h
The windiest month (with the highest average wind speed) is September (8.8km/h).
The calmest month (with the lowest average wind speed) is April (5.1km/h).
Average humidity
Jember, Indonesia
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are September and October (65%).
Average rainfall
Jember, Indonesia
- Average rainfall in January:
252mm - Average rainfall in February:
275mm - Average rainfall in March:
283mm - Average rainfall in April:
179mm - Average rainfall in May:
82mm - Average rainfall in June:
34mm
The wettest month (with the highest rainfall) is March (283mm).
The driest month (with the least rainfall) is August (10mm).
Average rainfall days
Jember, Indonesia
- Average rainfall days in January:
30.5 days - Average rainfall days in February:
28.1 days - Average rainfall days in March:
29.8 days - Average rainfall days in April:
26.7 days - Average rainfall days in May:
20.8 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
10.6 days - Average rainfall days in August:
6 days - Average rainfall days in September:
7.8 days - Average rainfall days in October:
17.2 days - Average rainfall days in November:
26.8 days - Average rainfall days in December:
29.3 days
The month with the highest number of rainy days is January (30.5 days).
The month with the least rainy days is August (6 days).
Average daylight / Average sunshine
Jember, Indonesia
- Average daylight in January:
12h and 3min - Average daylight in February:
12h and 2min - Average daylight in March:
12h and 1min - Average daylight in April:
11h and 5min - Average daylight in May:
11h and 4min - Average daylight in June:
11h and 4min
- Average daylight in July:
11h and 4min - Average daylight in August:
11h and 5min - Average daylight in September:
12h and 1min - Average daylight in October:
12h and 2min - Average daylight in November:
12h and 3min - Average daylight in December:
12h and 4min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in January:
6h and 5min - Average sunshine in February:
7h and 4min - Average sunshine in March:
8h and 1min - Average sunshine in April:
8h and 4min - Average sunshine in May:
9h and 1min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 4min - Average sunshine in October:
9h and 4min - Average sunshine in November:
8h and 5min - Average sunshine in December:
7h and 5min
The month with the most sunshine is October (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 6h and 54min).
Average sunshine days
Jember, Indonesia
- Average sunshine days in January:
0.3 days - Average sunshine days in February:
0.1 days - Average sunshine days in March:
0.7 days - Average sunshine days in April:
1.6 days - Average sunshine days in May:
7.7 days - Average sunshine days in June:
13.6 days
- Average sunshine days in July:
18.9 days - Average sunshine days in August:
22.6 days - Average sunshine days in September:
20.2 days - Average sunshine days in October:
11.8 days - Average sunshine days in November:
2 days - Average sunshine days in December:
1.2 days
The month with the most sunshine days is August (22.6 days).
The month with the least sunshine days is February (0.1 days).
Average UV index
Jember, Indonesia
The months with the highest UV index are February, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January and March (UV index 6).
Average cloud cover
Jember, Indonesia
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are August and September (Cloud cover 19).
Average visibility
Jember, Indonesia
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March and April (8km).
Jember, Indonesia
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