May weather forecast
Gresik, Indonesia

May, the last month of the autumn in Gresik, is another tropical month, with an average temperature varying between 31.3°C (88.3°F) and 25.4°C (77.7°F).

Temperature

May ushers in an average high-temperature of a still tropical 31.3°C (88.3°F), aligning closely with the preceding month. Throughout the month of May, Gresik witnesses an average low-temperature of 25.4°C (77.7°F).

Heat index

For most parts of May, the heat index is computed to be a blistering 40°C (104°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in May in Gresik is 75%.

Rainfall

In Gresik, during May, the rain falls for 11.9 days and regularly aggregates up to 22mm (0.87") of precipitation. Throughout the year, there are 159.4 rainfall days, and 403mm (15.87") of precipitation is accumulated.

Sea temperature

In Gresik, the average seawater temperature in May is 29.5°C (85.1°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

The average length of the day in May is 11h and 47min.
On the first day of May, sunrise is at 05:30 and sunset at 17:22. On the last day of the month, sunrise is at 05:35 and sunset at 17:19 WIB.

Sunshine

The average sunshine in May is 9.4h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 during May translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Caution! The Sun's UV rays become stronger due to reflections from water and sand.