November weather forecast
Surabaya, Indonesia

In November, Surabaya's weather transitions into the wet season, and the rainfall triples from October. The humidity rises perceptibly, and the temperature sees a slight drop, injecting a new flavor into the city's atmosphere. Despite the rising sea temperatures, the increased rainfall and less sunlight may discourage beach activities. Visitors will notice the intensifying wind speeds towards the month's end, signalling the onset of December's winds. It is wise to brace for frequent and potentially heavy downpours as the rainy season takes root.

Temperature

The beginning of November records an average high-temperature of a still hot 32.4°C, marking a negligible difference from October's 32.9°C. Surabaya witnesses an average low-temperature of 26.5°C throughout the month of November.

Heat index

For November, the heat index is estimated at a blisteringly hot 40°C. Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In November, the average relative humidity in Surabaya is 67%.

Rainfall

In Surabaya, Indonesia, in November, it is raining for 18.1 days, with typically 47mm of accumulated precipitation. Throughout the year, in Surabaya, there are 187.8 rainfall days, and 839mm of precipitation is accumulated.

Sea temperature

In Surabaya, Indonesia, in November, the average water temperature is 30.1°C.
Note: Waters warmer than 30°C may not offer the rejuvenating feel many seek.

Daylight

The average length of the day in November in Surabaya, Indonesia, is 12h and 27min.
On the first day of the month, sunrise is at 05:01 and sunset at 17:23. On the last day of November, sunrise is at 05:02 and sunset at 17:32 WIB.

Sunshine

The average sunshine in November is 9.6h.

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 in Surabaya are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 7 in November translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Alert! Sand and water increase UV exposure due to their reflective properties.