March weather forecast
Surabaya, Indonesia

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

With March's arrival, Surabaya's weather records an average high-temperature of a still tropical 30.5°C, marking little difference from February's 30.1°C. March's nights observe an average temperature of 25.3°C.

Heat index

For most parts of March, the heat index is estimated at a sweltering 39°C. Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in March is 78%.

Rainfall

In Surabaya, Indonesia, in March, it is raining for 25.3 days, with typically 152mm of accumulated precipitation. In Surabaya, Indonesia, during the entire year, the rain falls for 187.8 days and collects up to 839mm of precipitation.

Sea temperature

In Surabaya, in March, the average water temperature is 29.4°C.
Note: For any water activity, surface water temperatures between 25°C and 29°C are considered as excellent and extremely pleasant for lengthened periods.

Daylight

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

Sunshine

The average sunshine in March is 8.9h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Surabaya. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: An average maximum UV index of 7 in March leads to these recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.