Climate averages 1991–2020

Negombo weather
in January.

A hot, fairly dry month: the 4th warmest and the driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 30.2°C Daytime mean, January

Average low 23.2°C Night-time mean, January

Rainfall 38 mm 6 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

January is a hot month in Negombo: daytime highs average 30.2°C and nights cool to about 23.2°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 38 mm of rain on roughly 6 days, which makes January a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 45 min on an average January day.

The nearest other city in this atlas is Colombo (30 km away). In January its highs average 30.4°C, about as warm as Negombo, with 53 mm of rain.

Among the 12 cities listed in Sri Lanka, Negombo ranks 2nd of 12 for the warmest January highs and 1st of 12 for the driest January (rainfall, lowest first). The mean January high of those 12 cities is 28.2°C; Negombo is 2.1°C warmer than that mean.

From January to February, average highs rise by 1.6°C to 31.8°C, and monthly rainfall rises from 38 mm to 40 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Negombo climate table

1991–2020

Monthly climate averages for Negombo, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	30.2°C23.2°C	23.2°C	38	6.2	11.812 h
February	31.8°C23.7°C	23.7°C	40	6.5	11.912 h
March	31.8°C24.8°C	24.8°C	76	15.8	12.112 h
April	30.7°C25.5°C	25.5°C	163	26.0	12.312 h
May	29.6°C25.7°C	25.7°C	255	28.6	12.412 h
June	28.8°C25.4°C	25.4°C	224	27.0	12.513 h
July	28.5°C25.2°C	25.2°C	176	24.5	12.512 h
August	28.4°C25.0°C	25.0°C	165	23.9	12.412 h
September	28.6°C24.9°C	24.9°C	215	25.3	12.212 h
October	28.8°C24.5°C	24.5°C	315	26.4	12.012 h
November	29.0°C24.0°C	24.0°C	271	22.3	11.812 h
December	29.1°C23.5°C	23.5°C	137	14.1	11.712 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Negombo

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Negombo) is explained once on the Negombo year overview and on the Sources, method and limits page.