July
July · August · June
87climate match
United Kingdom · 1991–2020
Best time to visit
Chelmsford.
July leads for comfortable weather in Chelmsford: typically 23.3°C by day, 12.2°C at night, with 45 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high23.3°C
Typical low12.2°C
Rain in July45 mm
July
July · August · June
51climate match
September
September · June · May
91climate match
The weakest month is January, scoring 13 against July’s 87 — days reach only 7.9°C, 16° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
137.9° / 1.6°
Feb
188.6° / 1.5°
Mar
3211.4° / 2.8°
Apr
4414.5° / 4.2°
May
6017.8° / 7.1°
Jun
7420.8° / 10°
Jul
8723.3° / 12.2°
Aug
8422.9° / 12.2°
Sep
7019.7° / 9.8°
Oct
4615.2° / 7.2°
Nov
2710.9° / 3.9°
Dec
148.2° / 1.8°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 7.9°C | 1.6°C | 55 mm | 10.7 | 8 h 16 | 13 | Strong coverage |
| February | 8.6°C | 1.5°C | 44 mm | 9.6 | 9 h 51 | 18 | Strong coverage |
| March | 11.4°C | 2.8°C | 35 mm | 8.2 | 11 h 41 | 32 | Strong coverage |
| April | 14.5°C | 4.2°C | 39 mm | 8.5 | 13 h 47 | 44 | Strong coverage |
| May | 17.8°C | 7.1°C | 44 mm | 7.7 | 15 h 36 | 60 | Strong coverage |
| June | 20.8°C | 10°C | 50 mm | 7.7 | 16 h 39 | 74 | Strong coverage |
| July | 23.3°C | 12.2°C | 45 mm | 8 | 16 h 14 | 87 | Strong coverage |
| August | 22.9°C | 12.2°C | 52 mm | 8.4 | 14 h 38 | 84 | Strong coverage |
| September | 19.7°C | 9.8°C | 48 mm | 7.8 | 12 h 34 | 70 | Strong coverage |
| October | 15.2°C | 7.2°C | 61 mm | 10.4 | 10 h 33 | 46 | Strong coverage |
| November | 10.9°C | 3.9°C | 61 mm | 10.5 | 8 h 44 | 27 | Strong coverage |
| December | 8.2°C | 1.8°C | 56 mm | 11.1 | 7 h 49 | 14 | Strong coverage |
What has changed
Chelmsford runs +1.9°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+1.4
Feb
+2.6
Mar
+2.2
Apr
+2.4
May
+1.8
Jun
+1.9
Jul
+2.0
Aug
+1.8
Sep
+1.7
Oct
+1.1
Nov
+1.7
Dec
+2.0
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 15.4°C23 Jan 2016 | -17.8°C23 Jan 1963 | 26 mm17 Jan 2011 | 138 mm1988 · driest 9 mm in 1997 | 66 |
| February | 18.5°C24 Feb 2026 | -13.8°C11 Feb 2012 | 30 mm9 Feb 2009 | 104 mm2001 · driest 4 mm in 1998 | 66 |
| March | 22.8°C28 Mar 1965 | -11.1°C9 Mar 1970 | 31 mm14 Mar 1964 | 122 mm2023 · driest 4 mm in 2025 | 66 |
| April | 27.0°C18 Apr 2018 | -6.1°C4 Apr 1996 | 25 mm29 Apr 1991 | 105 mm2012 · driest 1 mm in 2007 | 66 |
| May | 32.7°C25 May 2026 | -2.8°C3 May 1967 | 35 mm16 May 1975 | 100 mm1982 · driest 10 mm in 2026 | 66 |
| June | 36.4°C25 Jun 2026 | -1.7°C3 Jun 1962 | 51 mm24 Jun 1994 | 124 mm2016 · driest 1 mm in 2018 | 66 |
| July | 39.1°C18 Jul 2022 | 2.2°C4 Jul 1965 | 50 mm20 Jul 1992 | 106 mm1962 · driest 1 mm in 2022 | 65 |
| August | 35.7°C9 Aug 2003 | 1.5°C28 Aug 1979 | 68 mm22 Aug 1987 | 130 mm1987 · driest 5 mm in 2003 | 65 |
| September | 32.3°C9 Sep 2023 | -1.1°C30 Sep 1969 | 55 mm3 Sep 1965 | 115 mm1975 · driest 5 mm in 1997 | 65 |
| October | 28.6°C1 Oct 2011 | -6.7°C29 Oct 1997 | 47 mm29 Oct 2000 | 152 mm2000 · driest 2 mm in 1972 | 65 |
| November | 18.5°C3 Nov 2010 | -8.1°C23 Nov 1983 | 38 mm14 Nov 1970 | 149 mm1970 · driest 11 mm in 2021 | 65 |
| December | 16.6°C1 Dec 1985 | -18.0°C13 Dec 1981 | 36 mm3 Dec 2020 | 117 mm2020 · driest 10 mm in 2016 | 65 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 10 | 1 |
| February | 0 | 0 | 10 | <1 |
| March | 0 | 0 | 7 | <1 |
| April | <1 | 0 | 5 | <1 |
| May | 1 | 0 | 1 | 1 |
| June | 4 | <1 | 0 | 1 |
| July | 9 | 1 | 0 | 1 |
| August | 7 | 1 | 0 | 1 |
| September | 2 | <1 | <1 | 1 |
| October | <1 | 0 | 2 | 2 |
| November | 0 | 0 | 6 | 2 |
| December | 0 | 0 | 11 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 35% | 3% | 47% | 5.1–9.6°C |
| February | 0% | 33% | 2% | 43% | 5.1–10.6°C |
| March | <1% | 29% | 2% | 39% | 7.8–12.9°C |
| April | 5% | 29% | 3% | 35% | 11.9–15.6°C |
| May | 21% | 27% | 3% | 31% | 15.3–19.2°C |
| June | 46% | 27% | 5% | 32% | 18.3–22.4°C |
| July | 62% | 24% | 4% | 28% | 19.9–25.1°C |
| August | 60% | 26% | 4% | 31% | 20.2–24.7°C |
| September | 34% | 26% | 4% | 33% | 17.5–21.1°C |
| October | 5% | 31% | 5% | 42% | 13.5–17.3°C |
| November | 0% | 33% | 5% | 43% | 8.7–12.1°C |
| December | 0% | 35% | 3% | 45% | 5.0–9.8°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 2653266
- NOAA station
- UKE00105901 · WRITTLE
- Station distance
- 2.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 51.74°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.