March weather forecast
Surabaya, Indonesia

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The skyscrapers making the cityscape of Surabaya in East Java, Indonesia
The skyscrapers making the cityscape of Surabaya in East Java, Indonesia

Weather in March

March signals a turning point in Surabaya's weather from rather wet conditions to less rainy circumstances. The shift in weather offers residents and tourists alike slightly warmer temperatures favored by sun-seeking tourists. However, the reduced rainfall is not a signal for aridity, but rather a regulated balance between sunny and wet conditions. A slight increase in sea temperature ties in ideally with the changing weather pattern, perfect for beach activities. Comparing March to its preceding month, there is a noticeable decline in wind speed, which calls for calmer sea conditions.

Temperature

March begins with an average high-temperature of a still tropical 30.5°C (86.9°F), reflecting close similarity to the preceding month. The average nighttime temperature in Surabaya lowers to a moderately hot 25.3°C (77.5°F) throughout March.

Heat index

March's mean heat index is evaluated at a torrid 39°C (102.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In March, the average relative humidity in Surabaya is 78%.

Rainfall

In March, in Surabaya, the rain falls for 25.3 days. Throughout March, 152mm (5.98") of precipitation is accumulated. Throughout the year, in Surabaya, there are 187.8 rainfall days, and 839mm (33.03") of precipitation is accumulated.

Sea temperature

In Surabaya, the average seawater temperature in March is 29.4°C (84.9°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

In March, the average length of the day in Surabaya is 12h and 8min.
On the first day of March in Surabaya, sunrise is at 05:34 and sunset at 17:48. On the last day of the month, sunrise is at 05:31 and sunset at 17:34 WIB.

Sunshine

The average sunshine in March in Surabaya is 8.9h.

UV index

The months with the highest UV index in Surabaya are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In March, the UV index of 7 transforms into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Notice! The reflection of water and sand increases the UV radiation significantly.

Frequently asked questions

How hot is March in Surabaya?

In Surabaya, in March, the average high-temperature is 30.5°C (86.9°F), and the average low-temperature is 25.3°C (77.5°F). In March, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 39°C (102.2°F).

What is the average humidity in March in Surabaya?

The average relative humidity in March in Surabaya is 78%.

How many days does it rain in March in Surabaya?

In Surabaya, Indonesia, in March, it is raining for 25.3 days, with typically 152mm (5.98") of accumulated precipitation.

What is the sea water temperature in March in Surabaya?

In March, the average sea temperature in Surabaya, Indonesia, is 29.4°C (84.9°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in March in Surabaya?

In Surabaya, Indonesia, the average day length in March is 12h and 8min.

When are sunrise and sunset in March in Surabaya?

In March, on the first day of the month, sunrise is at 05:34 and sunset at 17:48. On the last day of the month, sunrise is at 05:31 and sunset at 17:34 WIB.

How long on average sun shines in March in Surabaya?

The average sunshine duration in March is 8.9h.

What are the months with the highest UV index in Surabaya?

January through December, with an average maximum UV index of 7, are months with the highest UV index in Surabaya, Indonesia.

When is the lowest UV index in Surabaya?

January through December, with an average maximum UV index of 7, are months with the lowest UV index in Surabaya.

What is the UV index intensity in March in Surabaya?

In March, the average daily maximum UV index in Surabaya is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in March
Surabaya, Indonesia

Average temperature in March - Surabaya, Indonesia
  • Average high temperature in March: 30.5°C

The warmest month (with the highest average high temperature) is October (32.9°C).
The months with the lowest average high temperature are January, February and July (30.1°C).

  • Average low temperature in March: 25.3°C

The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.2°C).

Average pressure in March
Surabaya, Indonesia

Average pressure in March - Surabaya, Indonesia
  • Average pressure in March: 1009.7mbar

The month with the highest atmospheric pressure is August (1011.4mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).

Average wind speed in March
Surabaya, Indonesia

Average wind speed in March - Surabaya, Indonesia
  • Average wind speed in March: 6.5km/h

The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).

Average humidity in March
Surabaya, Indonesia

Average humidity in March - Surabaya, Indonesia
  • Average humidity in March: 78%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is October (63%).

Average rainfall in March
Surabaya, Indonesia

Average rainfall in March - Surabaya, Indonesia
  • Average rainfall in March: 152mm

The wettest month (with the highest rainfall) is February (179mm).
The driest month (with the least rainfall) is August (4mm).

Average rainfall days in March
Surabaya, Indonesia

Average rainfall days in March - Surabaya, Indonesia
  • Average rainfall days in March: 25.3 days

The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (3.7 days).

Average sea temperature in March
Surabaya, Indonesia

Average sea temperature in March - Surabaya, Indonesia
  • Average sea temperature in March: 29.4°C

The best month for swimming (with the highest average sea temperature) is December (30.2°C).
The coldest month (with the lowest average sea temperature) is August (27.8°C).

Average daylight in March /
Average sunshine in March
Surabaya, Indonesia

Average daylight in March / Average sunshine in March - Surabaya, Indonesia
  • Average daylight in March: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in March: 8h and 5min

The months with the most sunshine are August, September and October (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 8h and 6min).

Average sunshine days in March
Surabaya, Indonesia

Average sunshine days in March - Surabaya, Indonesia
  • Average sunshine days in March: 4.8 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is February (2.8 days).

Average UV index in March
Surabaya, Indonesia

Average UV index in March - Surabaya, Indonesia
  • Average UV index in March: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in March
Surabaya, Indonesia

Average cloud cover in March - Surabaya, Indonesia
  • Average cloud cover in March: 36

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 11).

Average visibility in March
Surabaya, Indonesia

Average visibility in March - Surabaya, Indonesia
  • Average visibility in March: 10km

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).

Surabaya, Indonesia

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