Kerala weather in September
Kerala averages 28°C by day and 24°C at night in September, with the sea at 29°C and 29 days with at least 1 mm of rain.
Day
28°C
Night
24°C
Sea
29°C
Rainy days
29
Flight from London
10h
What September feels like
September is hot but wet in Kerala: rainy season, so pack for showers.
The sea is warm at 29°C: comfortable for long swims.
It is rainy season, with rain on about 29 days.
Of the 48 sun destinations we track, Kerala is the #33 warmest in September.
Want it warmer in September?
These are hotter than Kerala this month for at most an hour and a half more flying:
Kerala weather by month
September is highlighted. Compare with August and October, or see the full year in Kerala.
Kerala in September: quick answers
Is Kerala hot in September?
September is hot but wet in Kerala: rainy season, so pack for showers. Average highs are 28°C and lows 24°C.
Can you swim in Kerala in September?
The sea is warm at 29°C: comfortable for long swims.
Does it rain in Kerala in September?
It is rainy season, with rain on about 29 days.
What is the warmest month in Kerala?
March, at an average high of 31°C. The coolest is July at 28°C.
How long is the flight to Kerala from the UK?
About 10h direct from London, estimated from the 8,227 km distance. Check your airline for exact times.
Still choosing? See where is hot in September for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in September from 2016 to 2025 for Kochi, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. A rainy day has at least 1 mm of rain. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Kerala in September?
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