Climate averages 1991–2020

Isiro weather
in January.

A hot, fairly dry month: the 2nd warmest and the driest of the year.

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

Average high 31.1°C Daytime mean, January

Average low 19.9°C Night-time mean, January

Rainfall 37 mm 7 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

January is a hot month in Isiro: daytime highs average 31.1°C and nights cool to about 19.9°C. By daytime temperature it is the 2nd warmest of the 12 months.

Expect about 37 mm of rain on roughly 7 days, which makes January a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average January day.

The nearest other city in this atlas is Bakwa (152 km away). In January its highs average 33.4°C, 2.3°C warmer than Isiro, with 17 mm of rain.

Among the 60 cities listed in the Democratic Republic of the Congo, Isiro ranks joint 9th of 60 for the warmest January highs and 7th of 60 for the driest January (rainfall, lowest first). The mean January high of those 60 cities is 28.8°C; Isiro is 2.4°C warmer than that mean.

From January to February, average highs rise by 0.5°C to 31.6°C, and monthly rainfall rises from 37 mm to 61 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

Isiro climate table

1991–2020

Monthly climate averages for Isiro, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	31.1°C19.9°C	19.9°C	37	6.6	12.012 h
February	31.6°C20.6°C	20.6°C	61	9.8	12.012 h
March	29.8°C20.7°C	20.7°C	146	20.2	12.112 h
April	28.1°C20.6°C	20.6°C	188	23.9	12.212 h
May	27.6°C20.4°C	20.4°C	152	24.4	12.212 h
June	27.0°C19.8°C	19.8°C	134	23.9	12.312 h
July	26.6°C19.4°C	19.4°C	149	25.2	12.312 h
August	26.7°C19.3°C	19.3°C	178	26.2	12.212 h
September	27.1°C19.5°C	19.5°C	190	26.4	12.112 h
October	26.7°C19.6°C	19.6°C	229	28.3	12.112 h
November	27.2°C19.6°C	19.6°C	201	24.0	12.012 h
December	29.1°C19.6°C	19.6°C	58	10.1	12.012 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 Isiro

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