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

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.