December weather forecast
Pasuruan, Indonesia

December, the first month of the summer in Pasuruan, is also a moderately hot month, with an average temperature ranging between max 29.3°C (84.7°F) and min 25.3°C (77.5°F).

Temperature

Pasuruan's December average high-temperature settles at a warm 29.3°C (84.7°F), showing a near match with the preceding month. In Pasuruan, the December nights are characterized by an average low-temperature of 25.3°C (77.5°F), a minor dip from daytime readings.

Heat index

Throughout December, the heat index is appraised at a very hot 35°C (95°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Pasuruan, Indonesia, the average relative humidity in December is 76%.

Rainfall

In Pasuruan, in December, it is raining for 26.3 days, with typically 151mm (5.94") of accumulated precipitation. In Pasuruan, during the entire year, the rain falls for 241.3 days and collects up to 1225mm (48.23") of precipitation.

Sea temperature

With an average sea temperature of 29.8°C (85.6°F), December is the month with the warmest seawater in Pasuruan.
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.

Daylight

With an average of 12h and 36min of daylight, December has the longest days of the year.
On the first day of December in Pasuruan, sunrise is at 05:01 and sunset at 17:33. On the last day of the month, sunrise is at 05:14 and sunset at 17:48 WIB.

Sunshine

In December, the average sunshine is 8.6h.

UV index

February through June, August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 7 suggests these recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.