Climate averages 1991–2020

Richard-Toll weather
in May.

A very hot, very dry month: the warmest and the 3rd driest of the year.

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

Average high 39.2°C Daytime mean, May
Average low 22.6°C Night-time mean, May
Rainfall <1 mm Almost no rain
Daylight 13 h Sunrise to sunset, per day
Every month in Richard-Toll · average highYear overview

May is a very hot month in Richard-Toll: daytime highs average 39.2°C and nights cool to about 22.6°C. By daytime temperature it is the warmest month of the year.

Rain is very rare: less than 1 mm falls in a typical May (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 53 min on an average May day.

The nearest other city in this atlas is Saint-Louis (98 km away). In May its highs average 28.1°C, 11.1°C cooler than Richard-Toll, with almost no rain (under 1 mm).

Among the 16 cities listed in Senegal, Richard-Toll ranks 2nd of 16 for the warmest May highs and joint 12th of 16 for the driest May (rainfall, lowest first). The mean May high of those 16 cities is 34.3°C; Richard-Toll is 4.9°C warmer than that mean.

From May to June, average highs fall by 0.6°C to 38.6°C, and monthly rainfall rises from under 1 mm to 1.5 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. 15202530354045 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 1000

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

Every month, side by side

Richard-Toll climate table

1991–2020
Monthly climate averages for Richard-Toll, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 30.7°C17.6°C17.6°C3.70.311.311 h
February 32.8°C18.9°C18.9°C1.60.311.612 h
March 35.4°C20.0°C20.0°C0.30.112.012 h
April 37.6°C21.1°C21.1°C0.10.012.512 h
May, selected 39.2°C22.6°C22.6°C0.40.112.913 h
June 38.6°C23.2°C23.2°C1.50.313.113 h
July 36.1°C24.3°C24.3°C122.213.013 h
August 34.9°C25.2°C25.2°C597.512.713 h
September 35.8°C25.5°C25.5°C558.312.212 h
October 38.2°C25.0°C25.0°C162.911.812 h
November 35.8°C22.6°C22.6°C0.90.211.411 h
December 32.2°C19.4°C19.4°C2.10.311.211 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 Richard-Toll

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 Richard-Toll) is explained once on the Richard-Toll year overview and on the Sources, method and limits page.