Climate averages 1991–2020

Saint-Étienne weather
in May.

A mild, wet month: the 5th warmest and the wettest of the year.

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

Average high 18.1°C Daytime mean, May
Average low 8.7°C Night-time mean, May
Rainfall 98 mm 14 days with ≥1 mm
Daylight 15 h Sunrise to sunset, per day
Every month in Saint-Étienne · average highYear overview

May is a mild month in Saint-Étienne: daytime highs average 18.1°C and nights cool to about 8.7°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 98 mm of rain on roughly 14 days, which makes May a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 52 min on an average May day.

The nearest other city in this atlas is Lyon (50 km away). In May its highs average 20.2°C, 2.1°C warmer than Saint-Étienne, with 90 mm of rain.

Among the 57 cities listed in France, Saint-Étienne ranks joint 43rd of 57 for the warmest May highs and 53rd of 57 for the driest May (rainfall, lowest first). The mean May high of those 57 cities is 18.9°C; Saint-Étienne is 0.8°C cooler than that mean.

From May to June, average highs rise by 4.0°C to 22.2°C, and monthly rainfall falls from 98 mm to 89 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. -5051015202530 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

Saint-Étienne climate table

1991–2020
Monthly climate averages for Saint-Étienne, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 6.3°C0.0°C0.0°C6312.29.19 h
February 7.4°C-0.2°C-0.2°C4910.010.410 h
March 11.1°C2.2°C2.2°C5511.311.912 h
April 14.3°C4.8°C4.8°C8612.513.513 h
May, selected 18.1°C8.7°C8.7°C9813.514.915 h
June 22.2°C12.4°C12.4°C8912.415.616 h
July 24.6°C14.7°C14.7°C8310.415.315 h
August 24.7°C14.7°C14.7°C779.714.114 h
September 20.2°C11.2°C11.2°C909.512.613 h
October 15.8°C8.2°C8.2°C9511.511.011 h
November 10.1°C3.7°C3.7°C9412.39.610 h
December 7.0°C1.1°C1.1°C6411.48.89 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 Saint-Étienne

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