September weather forecastKollam, India

September

Weather in September

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.

Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Kollam's average lowest temperatures are recorded in June through September and November, reaching a high of 29°C (84.2°F).

Kollam in September has an average high-temperature of 29°C (84.2°F) and an average low-temperature of 24°C (75.2°F).

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

In Kollam, the average seawater temperature in September is 27.5°C (81.5°F). 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.

In Kollam, the average day length in September is 12h and 10min.

On the first day of September in Kollam, India, sunrise is at 6:14 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 6:14 pm IST.

In Kollam, the average sunshine duration in September is 6h.

February through October, with an average maximum UV index of 12, are months with the highest UV index in Kollam.

The average daily maximum UV index in September in Kollam is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unprotected exposure to UV radiation.

Today

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Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

29°C

30°C

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in September
Kollam, India

Average high temperature in September: 29°C

The warmest months (with the highest average high temperature) are March and April (32°C).
The months with the lowest average high temperature are June, July, August, September and November (29°C).

Average low temperature in September: 24°C

The month with the highest average low temperature is April (26°C).
The coldest months (with the lowest average low temperature) are January, February and December (23°C).

Average rainfall in September
Kollam, India

Average rainfall in September: 209mm

The wettest month (with the highest rainfall) is June (518mm).
The driest month (with the least rainfall) is January (18mm).

Average rainfall days in September
Kollam, India

Average rainfall days in September: 12 days

The month with the highest number of rainy days is June (21 days).
The month with the least rainy days is January (1 days).

Average sea temperature in September
Kollam, India

Average sea temperature in September: 27.5°C

The best month for swimming (with the highest average sea temperature) is April (29.9°C).
The coldest month (with the lowest average sea temperature) is August (26.9°C).

Average daylight in September /
Average sunshine in September
Kollam, India

Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).

Average sunshine in September: 6h

The months with the most sunshine are January and February (Average sunshine: 9h).
The months with the least sunshine are June and July (Average sunshine: 5h).

Average UV index in September
Kollam, India

Average UV index in September: 12

The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).