Climate averages 1991–2020
Chelmsford weather
in July.
A mild, moderately wet month: the warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Chelmsford: daytime highs average 21.2°C and nights cool to about 13.8°C. By daytime temperature it is the warmest month of the year.
Expect about 53 mm of rain on roughly 11 days, which makes July a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 10 min on an average July day.
The nearest other city in this atlas is Basildon (19 km away). In July its highs average 21.0°C, about as warm as Chelmsford, with 52 mm of rain.
Among the 143 cities listed in the United Kingdom, Chelmsford ranks joint 24th of 143 for the warmest July highs and joint 12th of 143 for the driest July (rainfall, lowest first). The mean July high of those 143 cities is 20.0°C; Chelmsford is 1.2°C warmer than that mean.
From July to August, average highs fall by 0.1°C to 21.1°C, and monthly rainfall rises from 53 mm to 59 mm.
The annual picture
July 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
Chelmsford climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C2.7°C | 2.7°C | 50 | 10.7 | 8.48 h |
| February | 7.6°C2.5°C | 2.5°C | 41 | 9.1 | 9.910 h |
| March | 9.9°C3.8°C | 3.8°C | 39 | 10.0 | 11.812 h |
| April | 12.7°C5.6°C | 5.6°C | 46 | 10.8 | 13.814 h |
| May | 15.8°C8.6°C | 8.6°C | 51 | 9.8 | 15.616 h |
| June | 18.8°C11.6°C | 11.6°C | 53 | 9.9 | 16.617 h |
| July, selected | 21.2°C13.8°C | 13.8°C | 53 | 10.8 | 16.216 h |
| August | 21.1°C13.9°C | 13.9°C | 59 | 9.9 | 14.615 h |
| September | 18.3°C11.8°C | 11.8°C | 46 | 8.8 | 12.713 h |
| October | 14.4°C9.0°C | 9.0°C | 55 | 10.5 | 10.711 h |
| November | 10.2°C5.5°C | 5.5°C | 55 | 10.4 | 8.99 h |
| December | 7.6°C3.3°C | 3.3°C | 54 | 10.5 | 7.98 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
July in nearby cities
- Basildon in JulyUnited Kingdom · 19 kmHigh 21.0°C · Low 14.1°C · 52 mm rain
- Harlow in JulyUnited Kingdom · 25 kmHigh 21.4°C · Low 13.2°C · 58 mm rain
- Southend-on-Sea in JulyUnited Kingdom · 28 kmHigh 20.8°C · Low 14.4°C · 56 mm rain
- Dagenham in JulyUnited Kingdom · 29 kmHigh 21.5°C · Low 13.9°C · 53 mm rain
- Grays in JulyUnited Kingdom · 31 kmHigh 21.5°C · Low 13.9°C · 53 mm rain
- Ilford in JulyUnited Kingdom · 34 kmHigh 21.6°C · Low 13.8°C · 56 mm rain
- Colchester in JulyUnited Kingdom · 34 kmHigh 20.7°C · Low 14.2°C · 58 mm rain
- Barking in JulyUnited Kingdom · 35 kmHigh 21.7°C · Low 13.8°C · 56 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 Chelmsford) is explained once on the Chelmsford year overview and on the Sources, method and limits page.