Climate Overview
The climate in Negombo is hot. The average annual temperature is 28°C and approximately 2258mm of precipitation falls per year. November is the wettest month, receiving around 370mm of rainfall. Negombo sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Negombo has relatively stable temperatures year-round, staying within a 6°C range. The warmest month is February, when average highs reach 31°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.
Precipitation
Negombo is a very wet location, receiving approximately 2258mm of precipitation annually, which averages out to around 188mm per month. The wettest month is November, averaging 370mm of rainfall. May and October also tend to see above-average precipitation. The driest month is February, with just 28mm. That's 342mm 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
Negombo 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 June, averaging 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in March, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 10km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to pick up during the summer months. The seasonal averages are 16km/h in winter, 12km/h in spring, 20km/h in summer, 14km/h in autumn.
Seasons
87 days until Winter
It is currently autumn in Negombo, which began on September 23, 2026. Negombo sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in February at around 31°C, while the coldest stretch bottoms out in January near 25°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 580mm across the season with a monthly average of 193mm. Winds are generally light, averaging 12km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 546mm across the season with a monthly average of 182mm. Winds are moderate at around 20km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 932mm across the season with a monthly average of 311mm. Winds are generally light, averaging 14km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 31°C. Precipitation is moderate at around 200mm for the season, averaging 67mm per month. Winds are moderate at around 16km/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 Negombo 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.
