Climate averages 1991–2020

Oldham weather
in May.

A cool, moderately wet month: the 5th warmest and the 2nd driest of the year.

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

Average high 14.1°C Daytime mean, May
Average low 6.5°C Night-time mean, May
Rainfall 68 mm 13 days with ≥1 mm
Daylight 16 h Sunrise to sunset, per day
Every month in Oldham · average highYear overview

May is a cool month in Oldham: daytime highs average 14.1°C and nights cool to about 6.5°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 68 mm of rain on roughly 13 days, which makes May a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 52 min on an average May day.

The nearest other city in this atlas is Rochdale (9 km away). In May its highs average 14.5°C, about as warm as Oldham, with 69 mm of rain.

Among the 143 cities listed in the United Kingdom, Oldham ranks joint 120th of 143 for the warmest May highs and joint 120th of 143 for the driest May (rainfall, lowest first). The mean May high of those 143 cities is 15.2°C; Oldham is 1.1°C cooler than that mean.

From May to June, average highs rise by 2.5°C to 16.6°C, and monthly rainfall rises from 68 mm to 83 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. -50510152025 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

Oldham climate table

1991–2020
Monthly climate averages for Oldham, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 5.6°C1.1°C1.1°C8114.48.18 h
February 6.2°C0.9°C0.9°C7213.29.810 h
March 8.3°C1.9°C1.9°C7013.211.812 h
April 11.1°C3.6°C3.6°C6713.314.014 h
May, selected 14.1°C6.5°C6.5°C6813.115.916 h
June 16.6°C9.4°C9.4°C8314.016.917 h
July 18.3°C11.4°C11.4°C8414.916.516 h
August 18.0°C11.4°C11.4°C8814.914.815 h
September 15.6°C9.3°C9.3°C7312.012.813 h
October 12.1°C6.7°C6.7°C8314.110.611 h
November 8.3°C3.7°C3.7°C8114.58.79 h
December 5.8°C1.5°C1.5°C8914.67.68 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 Oldham

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