Climate Overview
The climate in Kalmunai is hot. The average annual temperature is 28°C and approximately 1413mm of precipitation falls per year. Kalmunai receives a notable amount of rainfall throughout the year, including during its driest month. Kalmunai sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Kalmunai has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is June, when average highs reach 32°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 24°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows.
Precipitation
Kalmunai is a fairly wet location, receiving approximately 1413mm of precipitation annually, which averages out to around 118mm per month. The wettest month is November, averaging 325mm of rainfall. December and October also tend to see above-average precipitation. The driest month is June, with just 31mm. That's 293mm less than November, 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
Kalmunai is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 19km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 18km/h in winter, 15km/h in spring, 15km/h in summer, 15km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Kalmunai, which began on March 20, 2026. Kalmunai sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in June at around 32°C, while the coldest stretch bottoms out in January near 24°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 25 to 31°C. Precipitation is moderate at around 213mm for the season, averaging 71mm per month. Winds are moderate at around 15km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 32°C. Rainfall is relatively light, with around 112mm over the season and a monthly average of 37mm. Winds are moderate at around 15km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 31°C. Rainfall is heavy, totalling around 593mm across the season with a monthly average of 198mm. Winds are generally light, averaging 15km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 28°C. Rainfall is heavy, totalling around 494mm across the season with a monthly average of 165mm. Winds are moderate at around 18km/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 Kalmunai 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.
