Climate averages 1991–2020
Guildford weather
in May.
A mild, moderately wet month: the 5th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Guildford: daytime highs average 16.4°C and nights cool to about 8.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 55 mm of rain on roughly 10 days, which makes May a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 33 min on an average May day.
The nearest other city in this atlas is Woking (9 km away). In May its highs average 16.6°C, about as warm as Guildford, with 55 mm of rain.
Among the 143 cities listed in the United Kingdom, Guildford ranks joint 7th of 143 for the warmest May highs and joint 52nd of 143 for the driest May (rainfall, lowest first). The mean May high of those 143 cities is 15.2°C; Guildford is 1.3°C warmer than that mean.
From May to June, average highs rise by 2.9°C to 19.3°C, and monthly rainfall rises from 55 mm to 57 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Guildford climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.5°C2.4°C | 2.4°C | 58 | 10.8 | 8.48 h |
| February | 7.9°C2.1°C | 2.1°C | 47 | 9.3 | 10.010 h |
| March | 10.4°C3.3°C | 3.3°C | 44 | 10.0 | 11.812 h |
| April | 13.3°C5.0°C | 5.0°C | 52 | 11.3 | 13.814 h |
| May, selected | 16.4°C8.1°C | 8.1°C | 55 | 10.1 | 15.516 h |
| June | 19.3°C11.1°C | 11.1°C | 57 | 9.7 | 16.516 h |
| July | 21.4°C13.2°C | 13.2°C | 57 | 10.4 | 16.116 h |
| August | 21.1°C13.2°C | 13.2°C | 64 | 10.0 | 14.615 h |
| September | 18.5°C11.0°C | 11.0°C | 49 | 9.2 | 12.713 h |
| October | 14.6°C8.4°C | 8.4°C | 62 | 10.8 | 10.711 h |
| November | 10.5°C5.1°C | 5.1°C | 66 | 11.5 | 9.09 h |
| December | 7.8°C2.9°C | 2.9°C | 62 | 10.9 | 8.08 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
- Woking in MayUnited Kingdom · 9 kmHigh 16.6°C · Low 8.1°C · 55 mm rain
- Bracknell in MayUnited Kingdom · 23 kmHigh 16.2°C · Low 7.8°C · 55 mm rain
- Sutton in MayUnited Kingdom · 29 kmHigh 16.2°C · Low 8.0°C · 55 mm rain
- Crawley in MayUnited Kingdom · 30 kmHigh 16.0°C · Low 8.2°C · 52 mm rain
- Slough in MayUnited Kingdom · 31 kmHigh 16.3°C · Low 8.2°C · 52 mm rain
- Hayes in MayUnited Kingdom · 33 kmHigh 16.3°C · Low 8.2°C · 52 mm rain
- Maidenhead in MayUnited Kingdom · 34 kmHigh 16.4°C · Low 8.1°C · 55 mm rain
- Purley in MayUnited Kingdom · 34 kmHigh 16.1°C · Low 7.9°C · 57 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Guildford) is explained once on the Guildford year overview and on the Sources, method and limits page.
Woking lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.