Climate averages 1991–2020
Watford weather
in March.
A cool, moderately wet month: the joint 8th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a cool month in Watford: daytime highs average 10.0°C and nights cool to about 3.4°C. By daytime temperature it is the joint 8th warmest of the 12 months.
Expect about 44 mm of rain on roughly 10 days, which makes March a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 50 min on an average March day.
The nearest other city in this atlas is Harrow (10 km away). In March its highs average 10.0°C, about as warm as Watford, with 42 mm of rain.
Among the 143 cities listed in the United Kingdom, Watford ranks joint 35th of 143 for the warmest March highs and joint 32nd of 143 for the driest March (rainfall, lowest first). The mean March high of those 143 cities is 9.5°C; Watford is 0.5°C warmer than that mean.
From March to April, average highs rise by 2.9°C to 12.9°C, and monthly rainfall rises from 44 mm to 50 mm.
The annual picture
March 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
Watford climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.1°C2.3°C | 2.3°C | 54 | 11.2 | 8.48 h |
| February | 7.6°C2.2°C | 2.2°C | 45 | 9.9 | 9.910 h |
| March, selected | 10.0°C3.4°C | 3.4°C | 44 | 10.3 | 11.812 h |
| April | 12.9°C5.1°C | 5.1°C | 50 | 11.4 | 13.814 h |
| May | 16.0°C8.1°C | 8.1°C | 56 | 10.5 | 15.616 h |
| June | 18.9°C11.1°C | 11.1°C | 58 | 10.5 | 16.617 h |
| July | 21.1°C13.3°C | 13.3°C | 58 | 11.2 | 16.216 h |
| August | 20.8°C13.3°C | 13.3°C | 62 | 10.7 | 14.615 h |
| September | 18.1°C11.1°C | 11.1°C | 51 | 9.4 | 12.713 h |
| October | 14.2°C8.4°C | 8.4°C | 60 | 11.3 | 10.711 h |
| November | 10.0°C5.1°C | 5.1°C | 62 | 11.2 | 8.99 h |
| December | 7.4°C2.9°C | 2.9°C | 57 | 11.2 | 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
March in nearby cities
- Harrow in MarchUnited Kingdom · 10 kmHigh 10.0°C · Low 3.4°C · 42 mm rain
- St Albans in MarchUnited Kingdom · 11 kmHigh 9.8°C · Low 3.2°C · 43 mm rain
- Hemel Hempstead in MarchUnited Kingdom · 12 kmHigh 9.6°C · Low 2.9°C · 44 mm rain
- Uxbridge in MarchUnited Kingdom · 13 kmHigh 10.1°C · Low 3.4°C · 43 mm rain
- Hayes in MarchUnited Kingdom · 16 kmHigh 10.1°C · Low 3.4°C · 43 mm rain
- Archway in MarchUnited Kingdom · 21 kmHigh 10.1°C · Low 3.3°C · 42 mm rain
- Slough in MarchUnited Kingdom · 21 kmHigh 10.3°C · Low 3.3°C · 43 mm rain
- Enfield Town in MarchUnited Kingdom · 21 kmHigh 10.2°C · Low 3.5°C · 42 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 Watford) is explained once on the Watford year overview and on the Sources, method and limits page.
Hemel Hempstead lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.