Western, Sri Lanka · population 137,223 · 18 weather stations within 200 km · records 1796 to 2025
Negombo has an average annual daytime high of 30.7°C, based on the 1951 to 1980 baseline. Its warmest month is March, when highs typically reach 32.0°C, and its coldest is January, with overnight lows near 22.1°C.
These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.
Since 1900, Negombo's average temperature has risen by +1.4°C. Compared to the earliest station records that begin in 1796, warming totals +1.9°C.
20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.
Daytime highs sit within a comfortable 15°C to 26°C range.
Negombo's average annual daytime high is 30.7°C, based on the 1951 to 1980 baseline period. The warmest month is March, with highs averaging 32.0°C, and the coldest is January, with lows averaging 22.1°C.
March is the warmest month in Negombo, with typical daytime highs of 32.0°C.
2023 is the hottest year on record for Negombo, running +1.4°C above the 1951 to 1980 baseline.
Yes. Since 1900, Negombo has warmed by roughly +1.4°C.
any time of year typically offers the most comfortable daytime highs, in the 15°C to 26°C range.
Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.