easeweather.com
Welwyn Garden City
AberdeenArchwayAylesburyBangorBasildonBathBelfastBexleyBirminghamBlackburnBlackpoolBognor RegisBoltonBournemouthBradfordBrightonBristolBuckleyBurnleyCambridgeCardiffCarlisleCarshaltonChathamChelmsfordCheltenhamChesterfieldColchesterCoventryCrawleyDawlishDerbyDerryDoncasterDudleyDundeeEastbourneEdinburghExeterFolkestoneFort WilliamGillinghamGlasgowGloucesterGreat YarmouthGuildfordHarlowHarrowHigh WycombeHuddersfieldIlfordInvernessIpswichKingston upon HullLeedsLeicesterLittlehamptonLiverpoolLondonLutonMaidstoneManchesterMansfieldMargateMilton KeynesNewcastle upon TyneNewportNorthamptonNorwichNottinghamOxfordPerthPeterboroughPlymouthPoolePortsmouthPrestonReadingRoyal Tunbridge WellsSheffieldSloughSouthallSouthamptonSouthend-on-SeaSt HelensStaffordStevenageStoke-on-TrentSunderlandSwanseaSwindonTauntonTorquayUxbridge
Welwyn Garden City
WeymouthWiganWolverhamptonWorthingWrexhamYork More Locations
United Kingdom weather

Weather in Welwyn Garden City for September 2025

Your guide to Welwyn Garden City weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Welwyn Garden City is slightly cooler than the historical average by -1.9 °C.

  • Expect cooler weather in the next days in Welwyn Garden City with the forecast suggesting a temperature of 17.7 °C, lower than the historical average.

  • In general, the average temperature in Welwyn Garden City at the beginning of September is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.1 °C by the end of September.

    • Rain 🌧️

  • Welwyn Garden City in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 76.2 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/12°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Welwyn Garden City Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
22°
2
Mist
22°
3
Overcast
22°
4
Sunny
21°
5
Cloudy
22°
6
Cloudy
25°
7
Sunny
25°
8
Partly cloudy
23°
9
Sunny
22°
10
Light rain shower
23°
11
Cloudy
19°
12
Mist
16°
13
Overcast
17°
14
Partly cloudy
18°
15
Partly cloudy
20°
16
Cloudy
18°
17
Moderate rain
17°
18
Partly cloudy
24°
19
Sunny
25°
20
Patchy rain possible
22°
21
Patchy rain possible
11°
22
Patchy rain possible
13°
23
Patchy rain possible
14°
24
Patchy rain possible
15°
25
Patchy rain possible
17°
26
Cloudy
17°
27
Partly cloudy
17°
28
Sunny
18°
29
Sunny
20°
30
Cloudy
16°

Temperatures trend during September in Welwyn Garden City

See the weather trend as well as the moving average line

September weather in Welwyn Garden City day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 22° /13° 2.7 mm 5
2 Sept. Mist
Mist
 22° /13° 2 mm 5
3 Sept. Overcast
Overcast
 22° /13° 3.3 mm 5
4 Sept. Sunny
Sunny
 21° /12° 6.7 mm 5
5 Sept. Cloudy
Cloudy
 22° /12° 2.3 mm 5
6 Sept. Cloudy
Cloudy
 25° /15° 0.6 mm 6
7 Sept. Sunny
Sunny
 25° /15° 2.1 mm 6
8 Sept. Partly cloudy
Partly cloudy
 23° /15° 5.4 mm 5
9 Sept. Sunny
Sunny
 22° /13° 0 mm 6
10 Sept. Light rain shower
Light rain shower
 23° /13° 1.7 mm 5
11 Sept. Cloudy
Cloudy
 19° /11° 0.9 mm 4
12 Sept. Mist
Mist
 16° /9° 1 mm 4
13 Sept. Overcast
Overcast
 17° /9° 0.7 mm 4
14 Sept. Partly cloudy
Partly cloudy
 18° /9° 1.8 mm 5
15 Sept. Partly cloudy
Partly cloudy
 20° /11° 0.1 mm 5
16 Sept. Cloudy
Cloudy
 18° /12° 0.1 mm 0.8
17 Sept. Moderate rain
Moderate rain
 17° /12° 5.1 mm 0.1
18 Sept. Partly cloudy
Partly cloudy
 24° /16° 0.1 mm 0.9
19 Sept. Sunny
Sunny
 25° /14° 0 mm 0.9
20 Sept. Patchy rain possible
Patchy rain possible
 22° /14° 0.1 mm 0.3
21 Sept. Patchy rain possible
Patchy rain possible
 11° /9° 3.2 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 13° /8° 0.3 mm 2
23 Sept. Patchy rain possible
Patchy rain possible
 14° /6° 1.1 mm 2
24 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 0.2 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 0.1 mm 3
26 Sept. Cloudy
Cloudy
 17° /8° 0 mm 3
27 Sept. Partly cloudy
Partly cloudy
 17° /8° 0 mm 4
28 Sept. Sunny
Sunny
 18° /8° 0 mm 4
29 Sept. Sunny
Sunny
 20° /11° 0 mm 4
30 Sept. Cloudy
Cloudy
 16° /9° 9.4 mm 4
Next
Important Notice
Our weather forecast for Welwyn Garden City in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Welwyn Garden City forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Welwyn Garden City in September - FAQ

What are the expected maximum and minimum temperatures in Welwyn Garden City during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Welwyn Garden City during September?
Moderate rainfall is anticipated in Welwyn Garden City during September, with a total of 76.2 mm spread over approximately 18 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Welwyn Garden City during September?
The average wind speed in Welwyn Garden City during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Welwyn Garden City

Explore the daily rainfall trends and prepare for Welwyn Garden Citys September weather 💧

UV exposure in Welwyn Garden City during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

More Welwyn Garden City weather pages
You are here
Location coordinates Where is Welwyn Garden City?

Get accurate weather forecasts for Welwyn Garden City, located at latitude 51.802 and longitude -0.207. Stay updated with localized weather information tailored for Welwyn Garden City.

Found a mistake?
We appreciate your attention to details. Tell us here.