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Contents
- The climate of Arusha
- The best time to visit Arusha
- The worst time to visit Arusha
- Spring weather in Arusha
- Summer weather in Arusha
- Autumn weather in Arusha
- Winter weather in Arusha
- 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 rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average UV index
The climate of Arusha
Anchored in the northern part of Tanzania, Arusha projects a temperate highland tropical climate with dry winters, an indicator that its atmospheric conditions trace back to the Köppen climate classification of Cwb. A year in Arusha manifests with temperatures fluctuating between 21°C (69.8°F) and 29°C (84.2°F), primarily retaining the milieu of a moderate environment. However, the city witnesses a distinct differentiation in rainfall, varying from a minimum of 15mm (0.59") in July to a peak of 368mm (14.49") in April.
Analyzing the daylight duration reveals steady stability, averaging around 12 hours throughout the year. The sunshine duration also follows a similar pattern, fluctuating from 6 to 9 hours over the months. A stable UV index of 11 and 12 throughout the year has also been recorded, marking Arusha as a city with high UV radiation. An anomaly in Arusha's weather pattern is the substantial rainfall in April of 368mm (14.49"), marking this month notoriously for its heavy downpours.
Analyzing the daylight duration reveals steady stability, averaging around 12 hours throughout the year. The sunshine duration also follows a similar pattern, fluctuating from 6 to 9 hours over the months. A stable UV index of 11 and 12 throughout the year has also been recorded, marking Arusha as a city with high UV radiation. An anomaly in Arusha's weather pattern is the substantial rainfall in April of 368mm (14.49"), marking this month notoriously for its heavy downpours.
The best time to visit Arusha
Post reflection on climatic patterns, a visit to Arusha between June and September translates into an ideal time. This period maintains a particularly comfortable environment with temperatures ranging between 21°C (69.8°F) to 22°C (71.6°F). The combination of low rainfall levels, ranging from 15mm (0.59") to 33mm (1.3"), with comfortable temperatures makes this four-month block particularly enticing. Moreover, the city also rewards with an average of 7 to 8 hours of sunshine each day to maximize sightseeing opportunities.
The worst time to visit Arusha
Visitors may wish to avoid Arusha in April, which carries a reputation for heavy downpours, receiving up to 368mm (14.49") of rainfall over 20 days. Notwithstanding, the reduced sunshine hours to 6 per day also mark this month with a rather dull and gloomy atmosphere. Moreover, colder temperatures also creep in during April, with a low of 14°C (57.2°F) making it potentially uncomfortable for those unaccustomed to cooler climates.
Spring weather in Arusha
Precedent to March, spring in Arusha sees steadily increasing rainfall levels from 58mm (2.28") to 84mm (3.31"), accompanied by increasing temperatures reaching up to 29°C (84.2°F). Abundant sunshine duration of 8 hours per day and prolonged daylight hours of approximately 12 hours illuminate the city, while the city continues to experience a high UV index of 12.
Summer weather in Arusha
Marked by significant rainfalls, the summer months of April and May witness the rainfall scale hitting a peak of 368mm (14.49") and subsequently retreating to 211mm (8.31"). Concurrently, temperatures vary between 25°C (77°F) to 22°C (71.6°F), accompanying long sunshine hours of 6 per day. An average of 12 hours of daylight is observed throughout these months, while the UV index drops slightly to 11 in May.
Autumn weather in Arusha
The autumn months of June to August in Arusha kindle mild temperatures ranging from 21°C (69.8°F) to 22°C (71.6°F) alongside minimal rainfall levels fluctuating between 15mm (0.59") to 20mm (0.79"). Sunshine duration maintains an average of 6 to 7 hours daily during these months, and stable daylight duration close to 12 hours presents an ideal situation for photo sessions or outdoor activities.
Winter weather in Arusha
The winter months between September and February in Arusha are marked by progressively rising temperatures, varying between 24°C (75.2°F) to 29°C (84.2°F). Rainfall levels display significant disparities, starting from 20mm (0.79") in September and escalating to 112mm (4.41") in November. Despite the rainfall unpredictability, the sunshine duration, daylight hours, and UV index remain relatively consistent throughout the winter months.
Weather in January
Beginning the year in Arusha, Tanzania finds climatic conditions typically tropical, typical of an equatorial region. Temperatures begin a slight downward trend from a high of 29°C (84.2°F) to 10°C (50°F), making for a comfortable range. Weather in January »
Weather in February
February witnesses similar weather conditions to January in Arusha. However, there is a dramatic surge in rainfall, reaching an impactful 84mm (3.31"), and a slight progression in temperatures. A majority of the tropical region experiences less daylight, now registering at approximately 12.2 hours. Weather in February »
Weather in March
Transitioning to March, Arusha's weather undergoes significant changes. Captivatingly, rainfall exhibits a deep increase from February, reaching 180mm (7.09") over 14 days. Amidst the rising trend of temperatures, this month sees the beginning of a minor decrease. Weather in March »
Weather in April
April in Arusha, Tanzania is characterized by rainfall at its peak, with a substantial total of 368mm (14.49"). This is distinctively more than the previous and marks the apex of precipitation. Simultaneously, there is a noticeable drop in temperatures from the levels experienced in March. Weather in April »
Weather in May
Arusha's weather shifts considerably as we approach May. A significant change in rainfall from April is recorded, with showers reducing to 211mm (8.31"). The climate undergoes a cooling period with temperatures gradually falling. Notably less sunshine hours are present in comparison to April, making for shorter sunlit days. Weather in May »
Weather in June
June in Arusha continues the cooling period initiated in May. The most exceptional change is observed in the dramatic decrease in rainfall from May to June, reaching only 33mm (1.3") over 5 days. This reduction in rainfall also accompanies diminished sunshine hours, which contributes to the overall drop in temperature. Weather in June »
Weather in July
In July, Arusha experiences relatively dry weather, with only 15mm (0.59") of rain falling over 4 days. There is a stable condition in temperatures and daylight hours from June to July. The UV index remains consistent, effectively presenting unvarying sun intensity. Weather in July »
Weather in August
August is characterised by consistent weather conditions, with stable temperatures and minimal rainfall. Arusha records another month of low rainfall with a minor increase to 20mm (0.79") that falls over a span of 3 days. The tropical region maintains a consistent sunlight duration from July, ensuring stable daylight conditions. Weather in August »
Weather in September
September sees only a slight change in Arusha's weather. Rainfall remains stable at 20mm (0.79"), maintaining September as one of the driest months. It also marks the beginning of a slight warming period, with temperatures marginally increasing from those in August. Weather in September »
Weather in October
October offers a significant turnaround to the weather conditions in Arusha. It sees a rise in temperatures from September, signalling a surge in warmth. Interestingly, rainfall also records an increase, rising to 36mm (1.42") but still remains relatively low. Weather in October »
Weather in November
In November, weather patterns in Arusha shift dramatically. Rainfall increases in leaps and bounds to record a massive 112mm (4.41") over 12 days. Consequently, temperatures remain stable despite these significant climatic changes. Weather in November »
Weather in December
The year ends in Arusha with December recording a slight decrease in rainfall from November. The month is characterised with temperatures stably rivalling those in the previous November, an uncommon occurrence in this tropical city. Weather in December »
Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month in Arusha?
The warmest period, with an average high-temperature of 29°C (84.2°F), falls in January and February.
How much does it rain in Arusha?
Throughout the year, there are 113 rainfall days, and 1237mm (48.7") of precipitation is accumulated.
What is the month with the highest UV index in Arusha?
January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index in Arusha.
What is the wettest month in Arusha?
April is the month with the most rainfall in Arusha, Tanzania. Rain falls for 20 days and accumulates 368mm (14.49") of precipitation.
What are the months with the least sunshine in Arusha?
The months with the least sunshine in Arusha, Tanzania, are April through July, with an average of 6h of sunshine.
What is the coldest month in Arusha?
June and July are known as Arusha's coldest months, with an average high-temperature of 21°C (69.8°F).
What is the month with the shortest days in Arusha?
June has the shortest days of the year, with an average of 11h and 54min of daylight.
What is the month with the lowest UV index in Arusha?
June and July, with an average maximum UV index of 11, are months with the lowest UV index.
What is the driest month in Arusha?
The month with the least rainfall is July, when the rain falls for 4 days and typically collects 15mm (0.59") of precipitation.
What month has the most sunshine in Arusha?
October has the most sunshine of the year, with an average of 9h of sunshine.
When are the longest days in Arusha?
With an average of 12h and 18min of daylight, December has the longest days of the year.
Is there Daylight Saving Time (DST) in Arusha?
Arusha, Tanzania, does not observe Daylight Saving Time (DST). EAT timezone is used throughout the entire year.
Average temperature
Arusha, Tanzania
The warmest months (with the highest average high temperature) are January and February (29°C).
The months with the lowest average high temperature are June and July (21°C).
The month with the highest average low temperature is April (14°C).
The coldest month (with the lowest average low temperature) is September (8°C).
Average rainfall
Arusha, Tanzania
- Average rainfall in January:
58mm - Average rainfall in February:
84mm - Average rainfall in March:
180mm - Average rainfall in April:
368mm - Average rainfall in May:
211mm - Average rainfall in June:
33mm
The wettest month (with the highest rainfall) is April (368mm).
The driest month (with the least rainfall) is July (15mm).
Average rainfall days
Arusha, Tanzania
- Average rainfall days in January:
11 days - Average rainfall days in February:
10 days - Average rainfall days in March:
14 days - Average rainfall days in April:
20 days - Average rainfall days in May:
14 days - Average rainfall days in June:
5 days
- Average rainfall days in July:
4 days - Average rainfall days in August:
3 days - Average rainfall days in September:
2 days - Average rainfall days in October:
5 days - Average rainfall days in November:
12 days - Average rainfall days in December:
13 days
The month with the highest number of rainy days is April (20 days).
The month with the least rainy days is September (2 days).
Average daylight / Average sunshine
Arusha, Tanzania
- Average daylight in January:
12h and 2min - Average daylight in February:
12h and 1min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 0min - Average daylight in May:
12h and 0min - Average daylight in June:
11h and 5min
- Average daylight in July:
11h and 5min - Average daylight in August:
12h and 0min - Average daylight in September:
12h and 1min - Average daylight in October:
12h and 1min - Average daylight in November:
12h and 2min - Average daylight in December:
12h and 2min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).
The month with the most sunshine is October (Average sunshine: 9h).
The months with the least sunshine are April, May, June and July (Average sunshine: 6h).
Average UV index
Arusha, Tanzania
The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 11).
Arusha, Tanzania
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