February weather forecast
Surabaya, Indonesia

February in Surabaya experiences a slight decline in temperature, which makes the weather slightly more comfortable than in January. This month reveals a continuation of the previous month's wet conditions characterized by brief yet intense shower sequences. Even though the rainfall slightly decreases by the month's end, the weather still exhibits a notable persistence of the wet season. Outdoor enthusiasts should not feel deterred; there is still ample daylight to explore the beauty of Surabaya. The sea temperature also exhibits a slight decrease, though it remains ideal for water-related activities.

Temperature

The coldest period in Surabaya, Indonesia, falls in January, February and July, when the average high-temperature reaches 30.1°C (86.2°F).

Heat index

For February, the heat index is evaluated at a sweltering 38°C (100.4°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
The standards for the heat index are set for locations in shade and under light breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

With an average relative humidity of 79%, February is the most humid month in Surabaya.

Rainfall

The month with the most rainfall in Surabaya is February, when the rain falls for 25 days and typically aggregates up to 179mm (7.05") of precipitation.

Sea temperature

In Surabaya, in February, the average water temperature is 28.9°C (84°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 Surabaya, Indonesia, the average length of the day in February is 12h and 20min.
On the first day of February, sunrise is at 05:29 and sunset at 17:55. On the last day of the month, sunrise is at 05:33 and sunset at 17:48 WIB.

Sunshine

In February, the average sunshine in Surabaya is 8.4h.

UV index

The months with the highest UV index 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 radiation for the ordinary person.
Note: In February, the maximum UV index of 7 suggests this advice:
Take precautions against overexposure. Protection against sun damage is needed. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Warning! The reflection of sand and water increases the UV dose.