Sudbury weather in August

In August, Sudbury sees average daytime highs of 21°C and overnight lows near 14°C, with 61 mm of rain across 10.5 wet days and about 14.4 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 20°C by the end. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 h 18 min at the start of August to 13 h 30 min by month's end. Set against the rest of the year, August is Sudbury's 2nd-clearest and 11th-windiest month. For the whole year in context, see Sudbury's year-round climate.

Daytime high
21°
1st warmest
Overnight low
14°
12th coldest
Rainfall
61 mm
10.5 wet days
Daylight
14 h 30 min
4:47 AM – 7:15 PM
Cloud cover
67%
2nd clearest
Wind
15 km/h
11th windiest
Solar energy
4.39 kWh/m²
Travel score
6.3
out of 10

Sudbury is town in Babergh, Suffolk, England.

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 20°C by the end.

A typical August day in Sudbury reaches about 21°C in the afternoon and slips back to 14°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 25°C. Set against its neighbours, August runs on par with July and about 3°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12214
22214
32214
42214
52214
62214
72214
82214
92214
102214
112214
122214
132114
142114
152114
162114
172114
182114
192114
202114
212114
222113
232113
242113
252013
262013
272013
282013
292013
302013
312013

How August really feels in Sudbury

Once humidity and wind are folded in, August 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

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

Sudbury weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 5011.318.10.9
Feb / 419.41.29.61.0
Mar10° / 409.90.611.52.1
Apr13° / 4511013.63.3
May16° / 5210.2015.44.7
Jun19° / 11°5611016.45.7
Jul21° / 14°5611.70166.2
Aug21° / 14°6110.5014.46.3
Sep18° / 11°489.2012.45.8
Oct14° / 5710.6010.44.1
Nov10° / 5510.20.18.52.3
Dec / 5410.80.97.61.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33565
43565
53565
63565
73664
83664
93664
103763
113763
123763
133763
143763
153664
163565
173565
183565
193565
203565
213466
223466
233565
243466
253466
263367
273466
283466
293466
303565
313565

Chance of precipitation in August

Any precipitation

Sudbury gets around 61 mm of rain over 10.5 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
236
336
436
536
635
735
835
935
1035
1135
1236
1336
1436
1536
1636
1736
1836
1936
2036
2135
2235
2334
2434
2533
2632
2732
2831
2930
3030
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14242151
24242151
34342151
44341151
54341151
64440151
74440151
84539151
94538151
104538151
114637151
124637151
134737151
144736151
154836151
164836141
174936141
185036141
195036131
205335120
215335120
225534110
235634100
245733100
25583390
26603280
27603280
28613270
29623260
30633160
31643150

Wind in August

Winds average 15 km/h in August.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 18 min at the start of August to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over August. Sunrise moves from 4:23 AM to 5:13 AM, and sunset from 7:43 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.34:237:43
215.34:257:41
315.24:267:40
415.24:287:38
515.14:307:36
615.14:317:34
715.04:337:33
814.94:347:31
914.94:367:29
1014.84:387:27
1114.84:397:25
1214.74:417:23
1314.64:427:21
1414.64:447:19
1514.54:467:17
1614.54:477:15
1714.44:497:13
1814.34:517:11
1914.34:527:09
2014.24:547:06
2114.14:567:04
2214.14:577:02
2314.04:597:00
2413.95:016:58
2513.95:026:55
2613.85:046:53
2713.85:066:51
2813.75:086:49
2913.65:096:46
3013.65:116:44
3113.55:136:42

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.39 kWh/m².

For context, solar energy here swings from a low near 0.63 kWh/m² to a high of 5.42 kWh/m² in June across the year — August's 4.39 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.4Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.1Bright
234.1Bright
244.0Bright
254.0Bright
264.0Moderate
273.9Moderate
283.9Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in August

Is August a good time to visit Sudbury?

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

6.3
Sightseeing
1st-best month of the year
3.9
Beach & pool
1st-best month of the year

August is a reasonable time to visit Sudbury for sightseeing.

What to pack for Sudbury in August

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

In August, Sudbury sees daytime highs around 21°C and nights near 14°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Sudbury in August

The nearest coast averages about 18°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 48 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
Mar7Bracing
Apr9Bracing
May12Bracing
Jun15Bracing
Jul17Cool
Aug18Cool
Sep17Cool
Oct15Bracing
Nov12Bracing
Dec9Bracing

UV index in Sudbury in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sudbury 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 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Sudbury?

Sudbury sits at 52.0°N, 0.7°E, 36 m above sea level, in United Kingdom. The nearest listed city is Colchester, 20 km away.

Topography around Sudbury

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

Within 3 km, the terrain around Sudbury has only modest variations in elevation — a maximum elevation change of 83 m around an average of 49 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 123 m; within 80 km, only modest variations in elevation — a maximum elevation change of 217 m.

The land around Sudbury is covered by cropland (44%), grassland (23%) and trees (22%) within 3 km, cropland (62%) and grassland (20%) within 16 km, and cropland (45%) and water (20%) within 80 km.

3 km
83 m
16 km
123 m
80 km
217 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Colchester 20 km · Haverhill 21 km · Braintree 22 km · Bury St Edmunds 23 km · Stowmarket 25 km · Witham 27 km · Ipswich 29 km · Newmarket 32 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 Sudbury (52.0389°, 0.7312°, elevation 36 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).