Climate averages 1991–2020

Ushirombo weather
in September.

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

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

Average high 30.4°C Daytime mean, September
Average low 18.8°C Night-time mean, September
Rainfall 24 mm 4 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Ushirombo · average highYear overview

September is a hot month in Ushirombo: daytime highs average 30.4°C and nights cool to about 18.8°C. By daytime temperature it is the warmest month of the year.

Expect about 24 mm of rain on roughly 4 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average September day.

The nearest other city in this atlas is Katoro (55 km away). In September its highs average 28.1°C, 2.3°C cooler than Ushirombo, with 73 mm of rain.

Among the 43 cities listed in Tanzania, Ushirombo ranks joint 6th of 43 for the warmest September highs and joint 30th of 43 for the driest September (rainfall, lowest first). The mean September high of those 43 cities is 28.0°C; Ushirombo is 2.4°C warmer than that mean.

From September to October, average highs fall by 0.7°C to 29.7°C, and monthly rainfall rises from 24 mm to 63 mm.

The annual picture

September in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 1520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 2000

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

Every month, side by side

Ushirombo climate table

1991–2020
Monthly climate averages for Ushirombo, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 26.9°C17.4°C17.4°C12219.412.312 h
February 27.8°C17.7°C17.7°C9015.812.212 h
March 27.6°C17.9°C17.9°C13918.112.112 h
April 26.6°C17.7°C17.7°C12617.212.012 h
May 27.5°C17.9°C17.9°C335.712.012 h
June 28.4°C17.6°C17.6°C3.30.811.912 h
July 28.8°C17.4°C17.4°C1.60.311.912 h
August 29.6°C18.3°C18.3°C8.51.612.012 h
September, selected 30.4°C18.8°C18.8°C244.112.112 h
October 29.7°C18.7°C18.7°C6310.712.212 h
November 27.1°C17.8°C17.8°C15719.912.312 h
December 26.5°C17.3°C17.3°C15122.412.312 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

September in nearby cities

Distance from Ushirombo

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