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

Surabaya experiences its coldest period in January, February and July, averaging a high-temperature of 30.1°C.

Heat index

February's mean heat index is estimated at a fiery hot 38°C. Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

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

Rainfall

February is the month with the most rainfall in Surabaya, Indonesia. Rain falls for 25 days and accumulates 179mm of precipitation.

Sea temperature

In February, the average sea temperature in Surabaya is 28.9°C.
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C to 29°C are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

In February, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 05:29 and sunset at 17:55. On the last day of February, in Surabaya, Indonesia, sunrise is at 05:33 and sunset at 17:49 WIB.

Sunshine

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

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 estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 7 during February, leads to the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The Sun's UV intensity grows with reflections off sand and water.