Watford weather forecast
UK towns · Hertfordshire, England · 51.66°N 0.39°W
Watford, in Hertfordshire, England, has its warmest weather in August, when daytime temperatures average 22°C, while January nights are the coldest at around 1.8°C. The town sees roughly 823mm of rain a year; October is normally the wettest month and April the driest. Figures are averaged from 2020–2024 observations.
Climate averages
| Month | Avg high | Avg low | Rain | Rain days |
|---|---|---|---|---|
| Jan | 7.5° | 1.8° | 69mm | 12 |
| Feb | 9.5° | 3.4° | 67mm | 12 |
| Mar | 10.7° | 3.8° | 67mm | 13 |
| Apr | 13.4° | 4.5° | 43mm | 9 |
| May | 17° | 8.1° | 65mm | 11 |
| Jun | 20.6° | 11.2° | 56mm | 11 |
| Jul | 21.7° | 13.2° | 70mm | 13 |
| Aug | 22° | 13.6° | 55mm | 9 |
| Sep | 19.7° | 11.7° | 70mm | 11 |
| Oct | 15.3° | 8.9° | 110mm | 15 |
| Nov | 10.8° | 5.3° | 73mm | 11 |
| Dec | 8.3° | 3.8° | 78mm | 13 |
Seasons in Watford
Spring (March–May). Daytime highs in Watford climb from 10.7°C in March to 17°C by May, while nights ease from 3.8°C to 8.1°C. The season brings around 175mm of rain in total.
Summer (June–August). The warmest stretch of the year: afternoons average 21.4°C, peaking in August at 22°C. August is usually the driest of the summer months (55mm over ~9 rainy days). Around the June solstice, Watford gets roughly 16.4 hours of daylight.
Autumn (September–November). Daytime temperatures fall from 19.7°C in September to 10.8°C by November, and rainfall builds to its annual peak — October is the wettest month of the year (110mm).
Winter (December–February). Nights average 3.0°C, with January the coldest month (average low 1.8°C, daytime high 7.5°C). Expect about 37 days with measurable rain over the three months, and only around 7.6 hours of daylight in mid-December.
How Watford compares
| Watford | UK town average | |
|---|---|---|
| Annual rainfall | 823mm | 1054mm |
| Rainy days per year | 140 | 167 |
| Summer daytime high | 21.4°C | 19.7°C |
| Winter night low | 3.0°C | 3.4°C |
Watford is about 22% drier than the average for the 121 UK towns tracked on this site (1054mm), based on 2020–2024 monthly normals.
Watford weather FAQs
What is the warmest month in Watford?
August is typically the warmest month in Watford, with average daytime highs of 22°C. Summer afternoons (June–August) average around 21.4°C.
What is the wettest month in Watford?
October is usually the wettest month, with around 110mm of rain over roughly 15 rainy days. April is typically the driest (43mm).
How much does it rain in Watford per year?
Watford receives roughly 823mm of precipitation per year, spread over about 140 days with at least 1mm of rain (based on 2020–2024 observations).
How cold are winters in Watford?
Winter nights (December–February) in Watford average around 3.0°C, with January typically the coldest month (average low 1.8°C).
When is the best time to visit Watford for good weather?
Late spring and summer offer the most reliable weather in Watford. August is typically the driest of the warm months (55mm of rain), while August is the warmest, averaging 22°C by day — and near the June solstice there are around 16 hours of daylight to enjoy.
How does Watford's weather compare with the rest of the UK?
Watford receives 823mm of rain a year, about 22% drier than the average for the 121 UK towns tracked on this site (1054mm). Summer daytime highs average 21.4°C against a UK-town average of 19.7°C, and winter nights average 3.0°C versus 3.4°C.
Is it going to rain in Watford?
For up-to-the-minute rain tracking, check the live rain radar — as a long-term guide, Watford averages 140 rainy days a year, with October the wettest month (110mm) and April the driest (43mm).
What is the 7-day forecast for Watford?
See the live hourly and 7-day forecast for day-by-day temperatures and rain chance. The figures on this page are long-term climate averages from 2020–2024, not the live forecast.