Climate averages 1991–2020

Ambalantota weather
in January.

A hot, moderately wet month: the 10th warmest and the 4th driest of the year.

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

Average high 29.6°C Daytime mean, January

Average low 23.2°C Night-time mean, January

Rainfall 56 mm 9 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

January is a hot month in Ambalantota: daytime highs average 29.6°C and nights cool to about 23.2°C. By daytime temperature it is the 10th warmest of the 12 months.

Expect about 56 mm of rain on roughly 9 days, which makes January a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 48 min on an average January day.

The nearest other city in this atlas is Matara (57 km away). In January its highs average 29.1°C, about as warm as Ambalantota, with 97 mm of rain.

Among the 12 cities listed in Sri Lanka, Ambalantota ranks 4th of 12 for the warmest January highs and 3rd of 12 for the driest January (rainfall, lowest first). The mean January high of those 12 cities is 28.2°C; Ambalantota is 1.4°C warmer than that mean.

From January to February, average highs rise by 1.1°C to 30.7°C, and monthly rainfall falls from 56 mm to 42 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

Ambalantota climate table

1991–2020

Monthly climate averages for Ambalantota, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	29.6°C23.2°C	23.2°C	56	8.6	11.812 h
February	30.7°C23.6°C	23.6°C	42	7.9	11.912 h
March	31.7°C24.4°C	24.4°C	58	11.2	12.112 h
April	31.3°C25.2°C	25.2°C	110	18.7	12.312 h
May	31.0°C25.9°C	25.9°C	101	18.7	12.412 h
June	31.0°C25.8°C	25.8°C	60	14.9	12.512 h
July	31.2°C25.6°C	25.6°C	45	13.2	12.412 h
August	31.2°C25.3°C	25.3°C	52	13.0	12.312 h
September	30.9°C25.1°C	25.1°C	87	16.6	12.212 h
October	30.3°C24.7°C	24.7°C	141	20.3	12.012 h
November	29.2°C24.1°C	24.1°C	231	23.0	11.812 h
December	28.9°C23.6°C	23.6°C	153	16.9	11.812 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 Ambalantota

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 Ambalantota) is explained once on the Ambalantota year overview and on the Sources, method and limits page.