Weather in Coimbatore in August

Shoulder season. August sits in between. You will get good days and you will lose some. You should expect rain on 23 days of the month, which is more days wet than dry.

August ranks 5 of 12 in Coimbatore: past the worst of the year but short of December, which is the month to book if the dates are open.

Rain on 23 of the month's 31 days, 3 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Natural fibres and a second shirt for the day. At 85% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 5 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest August day reached 34 °C and the coldest night fell to 19.8 °C, and the wettest single day dropped 51 mm — roughly 38% of the month's rain in one day.

August is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest August on record still delivered 285 mm against 70 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 136 mm average is a reasonable planning figure, not a promise.

Wind is light at 10.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 85% is the real story though — it is the number that decides how the day feels, not the 28.7 °C.

How August sits in the year

Temperatures hold steady either side: 28.5 °C in July, 28.7 here, 29.3 in September. Nothing about the timing within the month matters much.

Daylight in August

Coimbatore sits close enough to the equator that daylight barely moves all year — 12.5 hours in August, against a range of just 1.3 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

An inland climate

Despite being inland, the year stays fairly even: 18.9 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Coimbatore versus nearby

If Coimbatore is one option among several, the nearby comparison is worth making. Tiruppur is close enough to be a coin toss — 4.1 °C warmer, 9 days less rain. Munnar is a better bet in August — 8.8 °C cooler, 1 day more rain.

So: August is a compromise. December is 30 points better and is what Coimbatore is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Coimbatore

See all twelve months in Coimbatore, or where else to go in August.