Welwyn Garden City in Fall
In fall (September, October and November), Welwyn Garden City sees average daytime highs around 14°C and overnight lows near 8°C, with 168 mm of precipitation over about 31 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 19°C in early September to 9°C by late November. The sky is clear or mostly clear about 14% of the time across fall, and the air most often feels dry.
Fall is Welwyn Garden City's 2nd-best season to visit on our travel score. For the whole year in context, see Welwyn Garden City's year-round climate.
- Avg daytime high
- 14°C
- 2nd-warmest season
- Avg overnight low
- 8°C
- Precipitation
- 168 mm
- 31 wet days
- Avg wind
- 15 km/h
- Travel score
- 4.0
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Welwyn Garden City in Fall
Over the season highs ease from about 19°C in early September to 9°C by late November.
A typical fall day in Welwyn Garden City reaches about 14°C and drops to 8°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Welwyn Garden City
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Welwyn Garden City weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 7° / 2° | 53 | 11 | 0.9 | 8.1 | 0.9 |
| Feb | 8° / 2° | 43 | 9.7 | 1.2 | 9.6 | 1.1 |
| Mar | 10° / 4° | 43 | 10.3 | 0.7 | 11.5 | 2.2 |
| Apr | 13° / 5° | 50 | 11.2 | 0.2 | 13.6 | 3.5 |
| May | 16° / 8° | 54 | 10.2 | 0 | 15.4 | 4.9 |
| Jun | 19° / 11° | 58 | 10.4 | 0 | 16.4 | 5.8 |
| Jul | 21° / 13° | 57 | 11 | 0 | 16 | 6.3 |
| Aug | 21° / 13° | 62 | 10.8 | 0 | 14.4 | 6.2 |
| Sep | 18° / 11° | 49 | 9.5 | 0 | 12.4 | 5.7 |
| Oct | 14° / 8° | 58 | 10.7 | 0 | 10.4 | 4.0 |
| Nov | 10° / 5° | 60 | 10.7 | 0.2 | 8.6 | 2.2 |
| Dec | 8° / 3° | 56 | 11.2 | 1.1 | 7.6 | 1.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 14% of the time across fall.
Chance of precipitation in Fall
Welwyn Garden City gets around 168 mm of rain and snow over 31 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 15 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 24 min in early September to 7 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 1.9 kWh/m².
Is fall a good time to visit Welwyn Garden City?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Welwyn Garden City.
What to pack for Welwyn Garden City in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Welwyn Garden City sees daytime highs around 14°C and nights near 8°C. Pack a warm layer. Worth having: rain gear. About 31 days see rain.
UV index in Welwyn Garden City in Fall
Clear-sky midday UV across fall averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Welwyn Garden City peaks around August 10 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 3 | 5 | 6 | 6 | 6 | 4 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 3 | Moderate |
| May | 5 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Welwyn Garden City?
Welwyn Garden City sits at 51.8°N, 0.2°W, 92 m above sea level, in United Kingdom. The nearest listed city is Hatfield, 4.0 km away.
Topography around Welwyn Garden City
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Welwyn Garden City.
Within 3 km, the terrain around Welwyn Garden City has only modest variations in elevation — a maximum elevation change of 90 m around an average of 87 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 164 m; within 80 km, significant variations in elevation — a maximum elevation change of 307 m.
The land around Welwyn Garden City is covered by trees (44%) and grassland (22%) within 3 km, cropland (32%), trees (31%) and grassland (27%) within 16 km, and cropland (39%), grassland (27%) and trees (21%) within 80 km.
United Kingdom travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type D / G / M
- 230 V · 50 Hz
- Prices
- ≈ 89% of US
- price level, 2025
- GDP per capita
- $57,602
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2021
- Road deaths
- 3.2
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Welwyn Garden City (51.8017°, -0.2069°, elevation 92 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.