AI-generatedChelmsford at a glance
- Best time
- May – Sep
- Warmest month
- Jul · 23°
- Sunshine a year
- 1,690 h
- Rain a year
- 618 mm
- Climate
- Maritime
- Time zone
- UTC+0 / UTC+1
- Elevation
- 33 m
Climate in Chelmsford
Chelmsford has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 23 °C, while January is the coolest at 8 °C. With around 1,690 hours of sunshine a year, Chelmsford is moderately sunny; June is the sunniest month with 7.0 hours a day.
Holiday weather through the year
Best time to visit Chelmsford
The best time to visit Chelmsford is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from May to October. The wettest month is October with 61 mm of precipitation.
Chelmsford through the seasons
How the weather changes over the seasons, with averages for each.
Chelmsford in spring
Mar – May
Fair
- 11–17 °C by day
- 5.6 h of sun a day
- 31 rainy days in all
Chelmsford in summer
Jun – Aug
Good
- 20–23 °C by day
- 6.8 h of sun a day
- 31 rainy days in all
Chelmsford in autumn
Sep – Nov
Fair
- 11–19 °C by day
- 3.8 h of sun a day
- 31 rainy days in all
Chelmsford in winter
Dec – Feb
Poor
- 8 °C by day
- 2.2 h of sun a day
- 31 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Oct
15–28 °C and not too much rain
Find your perfect month
Tell us what you like and we rate every month in Chelmsford for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: May – September
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 10°
- Midday, 13:00: about 15°
- Afternoon, 16:00: about 15°
- Evening, 20:00: about 12°
- Night, 23:00: about 11°
07:2018:07
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:00–08:07 · evening 17:21–18:28
- Blue hour
- Morning 06:47–07:00 · evening 18:28–18:41
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Chelmsford compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 17° at the start of the month to 13° at the end. The days get 1.9 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 17° | 13° |
| Night-time low | 10° | 7° |
| Daylight | 11.7 h | 9.8 h |
What is the weather like in Chelmsford in October?
In October, Chelmsford is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sun is scarce, with only about 3.8 hours a day. Rain is frequent, with about 11 rainy days and 61 mm in total. All in all, October is a so-so month for a holiday in Chelmsford.
More details for October
- Daylight
- 10 h 47 min07:20 – 18:07
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 70 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1offset from UTC
How the score comes together
- Temperatureweight 50 %73 %
- Sunshineweight 20 %13 %
- Few rainy daysweight 30 %47 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Chelmsford
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Chelmsford: score 81 against 53. In June, days are 5 °C warmer than in October. June has one rainy day fewer. The sun shines 3 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Holiday weather score | 53 | 81better |
| Daytime high | 15° | 20° |
| Night-time low | 9° | 11° |
| Sunshine | 3.8 h | 7.0 hbetter |
| Rainy days | 11 | 10better |
| Rainfall | 61 mm | 54 mm |
Based on the climate averages 1996–2025.
Chelmsford month by month
The typical weather for every month at a glance.
16January8° · 1.9 h
In January, Chelmsford is cold: daytime highs average 8 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 1.9 hours a day. Rain is frequent, with about 11 rainy days and 50 mm in total. All in all, January is not an ideal month for a holiday in Chelmsford.
Chelmsford in January19February8° · 2.8 h
In February, Chelmsford is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2.8 hours a day. Rain is frequent, with about 10 rainy days and 45 mm in total. All in all, February is not an ideal month for a holiday in Chelmsford.
Chelmsford in February34March11° · 4.0 h
In March, Chelmsford is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. Expect around 4.0 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 41 mm in total. All in all, March is not an ideal month for a holiday in Chelmsford.
Chelmsford in March55April14° · 6.0 h
In April, Chelmsford is cool: daytime highs average 14 °C, and nights cool down to about 6 °C. Expect around 6.0 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 43 mm in total. All in all, April is a so-so month for a holiday in Chelmsford.
Chelmsford in April74May17° · 6.9 h
In May, Chelmsford is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sun shines for around 6.9 hours a day. Rain is frequent, with about 11 rainy days and 53 mm in total. All in all, May is a good month for a holiday in Chelmsford.
Chelmsford in May81June20° · 7.0 h
In June, Chelmsford is mild: daytime highs average 20 °C, and nights cool down to about 11 °C. The sun shines for around 7.0 hours a day. Rain is frequent, with about 10 rainy days and 54 mm in total. All in all, June is an excellent month for a holiday in Chelmsford.
Chelmsford in June78July23° · 7.0 h
In July, Chelmsford is warm: daytime highs average 23 °C, and nights cool down to about 14 °C. The sun shines for around 7.0 hours a day. Rain is frequent, with about 11 rainy days and 55 mm in total. All in all, July is a good month for a holiday in Chelmsford.
Chelmsford in July79August23° · 6.5 h
In August, Chelmsford is warm: daytime highs average 23 °C, and nights cool down to about 14 °C. The sun shines for around 6.5 hours a day. Rain is frequent, with about 10 rainy days and 60 mm in total. All in all, August is a good month for a holiday in Chelmsford.
Chelmsford in August78September19° · 5.3 h
In September, Chelmsford is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. Expect around 5.3 hours of sunshine a day. Rain falls on about 9 days, adding up to 44 mm. All in all, September is a good month for a holiday in Chelmsford.
Chelmsford in September53October15° · 3.8 h
In October, Chelmsford is cool: daytime highs average 15 °C, and nights cool down to about 9 °C. The sun is scarce, with only about 3.8 hours a day. Rain is frequent, with about 11 rainy days and 61 mm in total. All in all, October is a so-so month for a holiday in Chelmsford.
Chelmsford in October31November11° · 2.4 h
In November, Chelmsford is cool: daytime highs average 11 °C, and nights cool down to about 5 °C. The sun is scarce, with only about 2.4 hours a day. Rain is frequent, with about 11 rainy days and 59 mm in total. All in all, November is not an ideal month for a holiday in Chelmsford.
Chelmsford in November17December8° · 1.8 h
In December, Chelmsford is cold: daytime highs average 8 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 1.8 hours a day. Rain is frequent, with about 11 rainy days and 54 mm in total. All in all, December is not an ideal month for a holiday in Chelmsford.
Chelmsford in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Chelmsford
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
CoolOctober: nights around 9°. A duvet at night and a jumper for the evening.
The coolest nights are in February (2°), the warmest in August (14°). Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 16 | 8° | 3° | 1.9 h | 11 | 50 |
| FebruaryFeb | 19 | 8° | 2° | 2.8 h | 10 | 45 |
| MarchMar | 34 | 11° | 4° | 4.0 h | 10 | 41 |
| AprilApr | 55 | 14° | 6° | 6.0 h | 10 | 43 |
| MayMay | 74 | 17° | 9° | 6.9 h | 11 | 53 |
| JuneJun | 81 | 20° | 11° | 7.0 h | 10 | 54 |
| JulyJul | 78 | 23° | 14° | 7.0 h | 11 | 55 |
| AugustAug | 79 | 23° | 14° | 6.5 h | 10 | 60 |
| SeptemberSep | 78 | 19° | 11° | 5.3 h | 9 | 44 |
| OctoberOct | 53 | 15° | 9° | 3.8 h | 11 | 61 |
| NovemberNov | 31 | 11° | 5° | 2.4 h | 11 | 59 |
| DecemberDec | 17 | 8° | 3° | 1.8 h | 11 | 54 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
51.74° N, 0.47° E · 33 m · Europe/London
Sunshine hours in Chelmsford
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.8 of 10.8 hours of daylight in Chelmsford, 35 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Chelmsford: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Chelmsford has about 11 rainy days with 61 mm of rain in total.
UV index in Chelmsford
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 7).
Minutes until sunburn in October
- Very fair skin
- about 70 min
- Fair skin
- about 90 min
- Light brown skin
- over 2 h
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Chelmsford
How breezy and how cloudy Chelmsford is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Chelmsford typically peaks at 23 km/h during the day: Beaufort 4, moderate breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 70 % of the sky over Chelmsford: mostly cloudy, with about 3.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Planning a trip to Chelmsford
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Chelmsford in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Chelmsford has its best school-holiday weather during the summer holidays (score 79) and its weakest during the Christmas holidays (score 17).
- 49
Easter holidays
Mar – Apr
Fair
- 13 °C by day
- 5.4 h of sun a day
- 10 rainy days a month
- 75
May half-term
May – Jun
Good
- 18 °C by day
- 6.9 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 79
Summer holidays
Jul – Aug
GoodBest holidays
- 23 °C by day
- 6.7 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 53
October half-term
Oct
Fair
- 15 °C by day
- 3.8 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 17
Christmas holidays
Dec – Jan
Poor
- 8 °C by day
- 1.9 h of sun a day
- 11 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- Short trip – train or car is often quicker
- Distance
- 70 km
- Time zone
- UTC+1
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Chelmsford compared
Put Chelmsford side by side with another destination.
Chelmsford vs Basildon
In October the holiday weather in Chelmsford and Basildon is about equally good (score 53 vs 53). During the day it is about as warm in Basildon as in Chelmsford.
| in October | Chelmsford | Basildon |
|---|---|---|
| Holiday weather score | 53 | 53 |
| Daytime high | 15° | 15° |
| Sea | no sea nearby | 15° |
| Sunshine | 4 h | 4 h |
| Rainy days | 11 | 11 |
| Best time | May – Sep | Jul – Aug |
Through the year
United Kingdom in October: the best places
In October, Chelmsford ranks 6 among the 31 nearest destinations in this country.
- Weybridge16°60
- 2London16°57
- 3Slough16°55
- 4Watford16°54
- 5Woking16°54
- 6ChelmsfordThis page15°53
- 7Cambridge15°53
- 8Canterbury16°53
Near Chelmsford
Other destinations close by.
Places with a climate like Chelmsford
Destinations whose weather through the year is closest to Chelmsford's – good alternatives.
Frequently asked questions about Chelmsford
When is the best time to visit Chelmsford?
The best time to visit Chelmsford is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Chelmsford?
July is the warmest month, with average highs of 23 °C and nights around 14 °C. January is the coolest month at 8 °C.
When does it rain most in Chelmsford?
The wettest month is October with 61 mm of precipitation. The driest month is March with 41 mm.
How many hours of sunshine does Chelmsford get?
Chelmsford gets around 1,690 hours of sunshine a year. The sunniest month is June with 7.0 hours a day; in December there are 1.8 hours a day.
What time zone is Chelmsford in?
Chelmsford is on UTC+0 in January and UTC+1 in July.
Which school holidays are best for Chelmsford?
Chelmsford has its best school-holiday weather during the summer holidays (score 79) and its weakest during the Christmas holidays (score 17). Holiday ratings (0–100): Easter holidays 49, May half-term 75, summer holidays 79, October half-term 53, Christmas holidays 17.