September weather forecast
Kollam, India

September, the last month of the rainy (monsoon) season in Kollam, is another warm month, with temperature in the range of an average high of 29°C (84.2°F) and an average low of 24°C (75.2°F).

Temperature

Kollam experiences the lowest of its temperatures in June through September and November, when the average high-temperatures rise to 29°C (84.2°F).

Rainfall

In Kollam, during September, the rain falls for 12 days and regularly aggregates up to 209mm (8.23") of precipitation. In Kollam, India, during the entire year, the rain falls for 117 days and collects up to 2427mm (95.55") of precipitation.

Sea temperature

In Kollam, in September, the average water temperature is 27.5°C (81.5°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 6:14 am and sunset at 6:32 pm. On the last day of September, sunrise is at 6:11 am and sunset at 6:14 pm IST.

Sunshine

In September, the average sunshine is 6h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 12 during September translates into the following guidance:
Execute all vital precautions. Preventing sun damage is of utmost importance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise. Attention! UV strength is notably upped by the reflection of sand and water.