Climate averages 1991–2020

Katoro weather
in May.

A warm, moderately wet month: the 8th warmest and the 4th driest of the year.

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

Average high 26.6°C Daytime mean, May
Average low 17.8°C Night-time mean, May
Rainfall 58 mm 9 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Katoro · average highYear overview

May is a warm month in Katoro: daytime highs average 26.6°C and nights cool to about 17.8°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 58 mm of rain on roughly 9 days, which makes May a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average May day.

The nearest other city in this atlas is Geita (36 km away). In May its highs average 26.9°C, about as warm as Katoro, with 60 mm of rain.

Among the 43 cities listed in Tanzania, Katoro ranks 24th of 43 for the warmest May highs and 27th of 43 for the driest May (rainfall, lowest first). The mean May high of those 43 cities is 26.1°C; Katoro is 0.5°C warmer than that mean.

From May to June, average highs rise by 0.9°C to 27.5°C, and monthly rainfall falls from 58 mm to 10 mm.

The annual picture

May 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 2500

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

Every month, side by side

Katoro climate table

1991–2020
Monthly climate averages for Katoro, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 26.0°C17.4°C17.4°C13921.412.312 h
February 27.0°C17.8°C17.8°C9816.312.212 h
March 26.9°C17.9°C17.9°C16220.712.112 h
April 26.0°C17.7°C17.7°C17620.012.012 h
May, selected 26.6°C17.8°C17.8°C588.612.012 h
June 27.5°C17.6°C17.6°C102.112.012 h
July 28.1°C17.5°C17.5°C6.01.012.012 h
August 28.4°C18.1°C18.1°C294.512.012 h
September 28.1°C18.3°C18.3°C7310.412.112 h
October 26.7°C18.2°C18.2°C14618.912.212 h
November 25.4°C17.6°C17.6°C23225.712.212 h
December 25.4°C17.3°C17.3°C20125.112.312 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

May in nearby cities

Distance from Katoro

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