East Dereham weather in September

In September, East Dereham sees average daytime highs of 18°C and overnight lows near 12°C, with 60 mm of rain across 10.3 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 16°C by the end. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is East Dereham's 5th-clearest and 8th-windiest month. For the whole year in context, see East Dereham's year-round climate.

Daytime high
18°
4th warmest
Overnight low
12°
10th coldest
Rainfall
60 mm
10.3 wet days
Daylight
12 h 24 min
5:38 AM – 6:03 PM
Cloud cover
69%
5th clearest
Wind
17 km/h
8th windiest
Solar energy
3.17 kWh/m²
Travel score
5.4
out of 10

East Dereham is town in Norfolk, England.

Density
895/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 16°C by the end.

A typical September day in East Dereham reaches about 18°C in the afternoon and slips back to 12°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 21°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11913
21913
31913
41912
51912
61812
71812
81812
91812
101812
111812
121812
131812
141812
151812
161812
171712
181711
191711
201711
211711
221711
231711
241711
251711
261711
271611
281611
291611
301611

How September really feels in East Dereham

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

East Dereham weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 531217.90.8
Feb / 4210.31.39.50.9
Mar / 47110.611.51.8
Apr12° / 4710.7013.63.0
May15° / 5510.8015.54.3
Jun18° / 11°6511.3016.55.3
Jul20° / 14°6412016.16.0
Aug20° / 14°6711.4014.56.0
Sep18° / 12°6010.3012.45.4
Oct14° / 6512.1010.33.8
Nov10° / 58120.28.52.1
Dec / 5511.70.97.51.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33664
43763
53763
63763
73763
83664
93664
103664
113664
123565
133466
143466
153466
163367
173367
183367
193169
203169
213169
223070
233070
242971
252971
262971
272971
282971
292971
302971

Chance of precipitation in September

Any precipitation

East Dereham gets around 60 mm of rain over 10.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
231
331
431
531
631
731
832
933
1033
1134
1234
1335
1435
1535
1636
1736
1836
1936
2036
2137
2237
2337
2438
2538
2639
2739
2839
2940
3040

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
166304
266304
367294
467294
568284
668284
769274
870264
970264
1071254
1172244
1273234
1373234
1474224
1575223
1676213
1776213
1877212
1978202
2078202
2179201
2279201
2379201
2479201
2581190
2681190
2782180
2883170
2984160
3085150

Wind in September

Winds average 17 km/h in September.

Across September, daily wind ranges from about 16 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
116light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 30 min at the start of September to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 126 minutes over September. Sunrise moves from 5:12 AM to 6:03 AM, and sunset from 6:40 PM to 5:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:126:40
213.45:146:37
313.35:166:35
413.25:186:32
513.25:196:30
613.15:216:27
713.05:236:25
813.05:256:23
912.95:266:20
1012.85:286:18
1112.85:306:15
1212.75:316:13
1312.65:336:10
1412.55:356:08
1512.55:376:05
1612.45:386:03
1712.35:406:00
1812.35:425:58
1912.25:445:55
2012.15:455:53
2112.15:475:50
2212.05:495:48
2311.95:515:45
2411.85:525:43
2511.85:545:40
2611.75:565:38
2711.65:585:35
2811.65:595:33
2911.56:015:31
3011.46:035:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.17 kWh/m².

For context, solar energy here swings from a low near 0.6 kWh/m² to a high of 5.66 kWh/m² in June across the year — September's 3.17 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.8Moderate
33.8Moderate
43.7Moderate
53.7Moderate
63.6Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.4Moderate
113.4Moderate
123.3Moderate
133.3Moderate
143.2Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.0Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.5Moderate
302.5Moderate
Planning a trip in September

Is September a good time to visit East Dereham?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.4
Sightseeing
3rd-best month of the year
1.6
Beach & pool
4th-best month of the year

September is a reasonable time to visit East Dereham for sightseeing.

What to pack for East Dereham in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, East Dereham sees daytime highs around 18°C and nights near 12°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near East Dereham in September

The nearest coast averages about 16°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 37 km away) is warmest in August at about 17°C and coldest in February near 6°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan6Bracing
Feb6Bracing
Mar6Bracing
Apr8Bracing
May10Bracing
Jun13Bracing
Jul15Cool
Aug17Cool
Sep16Cool
Oct13Bracing
Nov10Bracing
Dec8Bracing

UV index in East Dereham in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in East Dereham 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 10UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low
Location & terrain

Where is East Dereham?

East Dereham sits at 52.7°N, 0.9°E, 41 m above sea level, in United Kingdom. The nearest listed city is Bowthorpe, 20 km away.

Topography around East Dereham

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of East Dereham.

Within 3 km, the terrain around East Dereham has only modest variations in elevation — a maximum elevation change of 51 m around an average of 51 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 101 m; within 80 km, only modest variations in elevation — a maximum elevation change of 164 m.

The land around East Dereham is covered by cropland (41%), grassland (26%) and trees (22%) within 3 km, cropland (60%) and grassland (22%) within 16 km, and cropland (45%) and water (31%) within 80 km.

3 km
51 m
16 km
101 m
80 km
164 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Bowthorpe 20 km · Norwich 25 km · Thetford 32 km · King's Lynn 37 km · Bury St Edmunds 51 km · Wisbech 52 km · Great Yarmouth 54 km · Stowmarket 55 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
Christian 60%none 26%Muslim 4%other 2%

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 East Dereham (52.6833°, 0.9333°, elevation 41 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).