Climate Overview
The climate in Ammāpettai is hot. The average annual temperature is 29°C and approximately 831mm of precipitation falls per year. August is the wettest month, receiving around 152mm of rainfall. Ammāpettai is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, May, March. The coldest months are January, December, February, when temperatures can drop to 22°C.
Temperature
Ammāpettai sees moderate temperature variation throughout the year, ranging from 22°C to 39°C. April is the hottest month, with daytime highs reaching 39°C and an average of 33°C. January is the coolest month, with minimum temperatures around 22°C and an average of 26°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between May and June, with a 3°C shift in average temperatures.
Precipitation
Ammāpettai is a moderately rainy area, receiving approximately 831mm of precipitation annually, which averages out to around 69mm per month. The wettest month is August, averaging 152mm of rainfall. July and September also tend to see above-average precipitation. The driest month is February, with just 2mm. That's 150mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Ammāpettai is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 2km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
89 days until Autumn
It is currently summer in Ammāpettai, which began on June 21, 2026. Ammāpettai is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in April at around 39°C, while the coldest stretch bottoms out in January near 22°C. Autumn is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from 26 to 39°C. Rainfall is relatively light, with around 74mm over the season and a monthly average of 25mm. Winds are generally light, averaging 2km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 25 to 35°C. Rainfall is heavy, totalling around 395mm across the season with a monthly average of 132mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 33°C. Precipitation is moderate at around 296mm for the season, averaging 99mm per month. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 22 to 34°C. Rainfall is relatively light, with around 67mm over the season and a monthly average of 22mm. Winds are generally light, averaging 2km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Ammāpettai based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
