Climate averages 1991–2020

Ponnāni weather
in September.

A hot, very wet month: the 9th warmest and the 7th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 28.6°C Daytime mean, September
Average low 23.8°C Night-time mean, September
Rainfall 253 mm 24 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Ponnāni · average highYear overview

September is a hot month in Ponnāni: daytime highs average 28.6°C and nights cool to about 23.8°C. By daytime temperature it is the 9th warmest of the 12 months.

Expect about 253 mm of rain on roughly 24 days, which makes September a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 12 min on an average September day.

The nearest other city in this atlas is Malappuram (35 km away). In September its highs average 28.3°C, about as warm as Ponnāni, with 248 mm of rain.

Among the 692 cities listed in India, Ponnāni ranks joint 591st of 692 for the warmest September highs and joint 635th of 692 for the driest September (rainfall, lowest first). The mean September high of those 692 cities is 30.7°C; Ponnāni is 2.1°C cooler than that mean.

From September to October, average highs rise by 0.5°C to 29.1°C, and monthly rainfall rises from 253 mm to 271 mm.

The annual picture

September in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 2025303540 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 5500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Ponnāni climate table

1991–2020
Monthly climate averages for Ponnāni, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 33.0°C23.0°C23.0°C6.41.411.612 h
February 34.0°C23.9°C23.9°C113.011.812 h
March 34.2°C25.2°C25.2°C4811.312.112 h
April 32.4°C25.8°C25.8°C15423.812.412 h
May 30.7°C25.5°C25.5°C28626.112.613 h
June 28.3°C24.5°C24.5°C53129.612.713 h
July 27.7°C23.9°C23.9°C52230.312.713 h
August 27.9°C23.8°C23.8°C38528.712.512 h
September, selected 28.6°C23.8°C23.8°C25323.912.212 h
October 29.1°C23.7°C23.7°C27126.311.912 h
November 29.9°C23.4°C23.4°C13316.311.612 h
December 31.2°C22.9°C22.9°C295.011.512 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

September in nearby cities

Distance from Ponnāni

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ponnāni) is explained once on the Ponnāni year overview and on the Sources, method and limits page.