Lowestoft weather in September

In September, Lowestoft sees average daytime highs of 17°C and overnight lows near 14°C, with 66 mm of rain across 11 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 16°C by the end. The sky is clear or mostly clear about 19% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Lowestoft's 5th-clearest and 7th-windiest month. For the whole year in context, see Lowestoft's year-round climate.

Daytime high
17°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
66 mm
11 wet days
Daylight
12 h 24 min
5:35 AM – 5:59 PM
Cloud cover
65%
5th clearest
Wind
23 km/h
7th windiest
Solar energy
3.26 kWh/m²
Travel score
5.2
out of 10

Lowestoft is town and civil parish in East Suffolk, England.

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 18°C in the first days to 16°C by the end.

A typical September day in Lowestoft reaches about 17°C in the afternoon and slips back to 14°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 19°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

10°13°15°18°20°151015202530
Avg high (°C)Avg low (°C)
11815
21815
31815
41815
51815
61815
71715
81715
91715
101715
111715
121714
131714
141714
151714
161714
171714
181714
191714
201714
211614
221614
231614
241614
251614
261614
271613
281613
291613
301613

How September really feels in Lowestoft

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.

Lowestoft weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6413.10.680.8
Feb / 5310.60.99.50.6
Mar / 4810.70.511.51.1
Apr / 378.8013.62.0
May12° / 10°488.7015.53.3
Jun15° / 13°5410.1016.54.5
Jul18° / 15°5911.2016.15.6
Aug18° / 16°6410.2014.55.9
Sep17° / 14°6611012.45.2
Oct14° / 11°8112.9010.33.7
Nov11° / 7914.50.18.52.2
Dec / 7213.60.57.51.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24357
34456
44456
54456
64456
74555
84456
94456
104456
114456
124456
134456
144258
154258
164159
174159
184060
194060
203961
213862
223763
233763
243664
253664
263565
273565
283466
293466
303466

Chance of precipitation in September

Any precipitation

Lowestoft gets around 66 mm of rain over 11 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 37% and peaks near 43% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
132
231
331
431
532
632
732
833
934
1034
1135
1235
1336
1436
1537
1638
1738
1839
1939
2040
2140
2240
2341
2441
2541
2642
2742
2843
2943
3043

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 64% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
1523612
2523612
3543511
4553411
5563311
6573211
7573211
8593110
9603010
10603010
11612910
1262299
1363289
1464288
1564288
1665287
1765287
1866286
1966286
2067285
2167285
2268284
2368284
2469283
2569283
2670273
2771272
2872262
2973252
3075241

Wind in September

Winds average 23 km/h in September.

Across September, daily wind ranges from about 22 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
122breezy
222breezy
322breezy
422breezy
522breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1724breezy
1824breezy
1924breezy
2024breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3025breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 24 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 120 minutes over September. Sunrise moves from 5:09 AM to 6:00 AM, and sunset from 6:36 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:096:36
213.45:116:34
313.35:136:31
413.25:156:29
513.25:166:26
613.15:186:24
713.05:206:21
813.05:216:19
912.95:236:17
1012.85:256:14
1112.85:276:12
1212.75:286:09
1312.65:306:07
1412.55:326:04
1512.55:346:02
1612.45:355:59
1712.35:375:57
1812.35:395:54
1912.25:405:52
2012.15:425:50
2112.15:445:47
2212.05:465:45
2311.95:475:42
2411.85:495:40
2511.85:515:37
2611.75:535:35
2711.65:545:32
2811.65:565:30
2911.55:585:27
3011.46:005:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.26 kWh/m².

For context, solar energy here swings from a low near 0.61 kWh/m² to a high of 5.81 kWh/m² in June across the year — September's 3.26 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.8Moderate
53.8Moderate
63.7Moderate
73.7Moderate
83.6Moderate
93.6Moderate
103.5Moderate
113.5Moderate
123.4Moderate
133.4Moderate
143.3Moderate
153.3Moderate
163.2Moderate
173.2Moderate
183.1Moderate
193.1Moderate
203.0Moderate
213.0Moderate
222.9Moderate
232.9Moderate
242.8Moderate
252.8Moderate
262.7Moderate
272.7Moderate
282.6Moderate
292.6Moderate
302.5Moderate
Planning a trip in September

Is September a good time to visit Lowestoft?

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

5.2
Sightseeing
3rd-best month of the year
1.2
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Lowestoft for sightseeing.

What to pack for Lowestoft in September

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

In September, Lowestoft sees daytime highs around 17°C and nights near 14°C. Worth packing: a warm layer, rain gear and a windbreaker. About 11 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Lowestoft in September

The nearest coast averages about 17°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 14 km away) is warmest in August at about 18°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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan7Bracing
Feb6Bracing
Mar6Bracing
Apr8Bracing
May10Bracing
Jun13Bracing
Jul16Cool
Aug18Cool
Sep17Cool
Oct15Bracing
Nov12Bracing
Dec9Bracing

UV index in Lowestoft 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 Lowestoft peaks around June 23 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 6Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low
Location & terrain

Where is Lowestoft?

Lowestoft sits at 52.5°N, 1.8°E, 7 m above sea level, in United Kingdom. The nearest listed city is Great Yarmouth, 15 km away.

Topography around Lowestoft

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

Within 3 km, the terrain around Lowestoft has only modest variations in elevation — a maximum elevation change of 36 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 126 m.

The land around Lowestoft is covered by water (52%) and artificial surfaces (27%) within 3 km, water (56%) within 16 km, and water (39%) and cropland (36%) within 80 km.

3 km
36 m
16 km
59 m
80 km
126 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Great Yarmouth 15 km · Norwich 35 km · Bowthorpe 40 km · East Dereham 60 km · Stowmarket 60 km · Ipswich 62 km · Felixstowe 63 km · Harwich 67 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 Lowestoft (52.4752°, 1.7517°, elevation 7 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).