Seaford weather in August

In August, Seaford sees average daytime highs of 18°C and overnight lows near 16°C, with 63 mm of rain across 9.1 wet days and about 14.3 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 18°C through the month. The sky is clear or mostly clear about 29% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 15 h 12 min at the start of August to 13 h 24 min by month's end. Set against the rest of the year, August is Seaford's 2nd-clearest and 10th-windiest month. For the whole year in context, see Seaford's year-round climate.

Daytime high
18°
1st warmest
Overnight low
16°
12th coldest
Rainfall
63 mm
9.1 wet days
Daylight
14 h 18 min
4:53 AM – 7:14 PM
Cloud cover
58%
2nd clearest
Wind
21 km/h
10th windiest
Solar energy
4.73 kWh/m²
Travel score
6.1
out of 10

Seaford is coastal town and civil parish in East Sussex, England.

Density
1,313/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 18°C through the month.

A typical August day in Seaford reaches about 18°C in the afternoon and slips back to 16°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 20°C. Set against its neighbours, August runs about 1°C warmer than July and about 1°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11816
21816
31816
41816
51816
61816
71816
81816
91816
101816
111816
121816
131816
141816
151816
161816
171816
181816
191816
201816
211816
221816
231816
241816
251816
261816
271816
281816
291815
301815
311815

Seaford weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9814.40.58.21.3
Feb / 6711.60.69.71.1
Mar / 5310.10.311.51.6
Apr10° / 489.2013.52.5
May13° / 10°478.5015.23.6
Jun15° / 13°488.7016.24.7
Jul17° / 15°508.6015.85.9
Aug18° / 16°639.1014.36.1
Sep17° / 15°6810.7012.45.4
Oct15° / 12°11414.3010.43.9
Nov12° / 12315.908.72.5
Dec / 11114.60.47.81.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35743
45743
55545
65545
75545
85446
95347
105248
115248
125149
135149
145149
154951
164951
174852
184852
194852
204753
214753
224753
234654
244654
254555
264654
274654
284654
294555
304555
314555

Chance of precipitation in August

Any precipitation

Seaford gets around 63 mm of rain over 9.1 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
329
429
529
629
729
829
930
1030
1130
1230
1330
1430
1530
1630
1731
1831
1930
2030
2130
2230
2330
2430
2529
2629
2729
2829
2929
3029
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 52% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11761220
21761220
31761220
41859230
51858231
61957231
71957231
82056231
92056231
102155231
112155231
122254231
132353231
142354221
152453221
162453221
172552221
182552221
192652220
202752210
212851210
222950210
233049200
243248200
253347190
263546190
273745180
283844170
294044170
304143160
314341160

Wind in August

Winds average 21 km/h in August.

Across August, daily wind ranges from about 20 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120light breeze
220breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 12 min at the start of August to 13 h 24 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 4:30 AM to 5:17 AM, and sunset from 7:41 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.24:307:41
215.14:327:39
315.14:337:38
415.04:357:36
515.04:367:34
614.94:387:33
714.94:397:31
814.84:417:29
914.74:427:27
1014.74:447:25
1114.64:467:24
1214.64:477:22
1314.54:497:20
1414.54:507:18
1514.44:527:16
1614.34:537:14
1714.34:557:12
1814.24:567:10
1914.24:587:08
2014.15:007:06
2114.05:017:04
2214.05:037:02
2313.95:047:00
2413.95:066:58
2513.85:086:55
2613.75:096:53
2713.75:116:51
2813.65:126:49
2913.55:146:47
3013.55:156:44
3113.45:176:42

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.73 kWh/m².

For context, solar energy here swings from a low near 0.71 kWh/m² to a high of 5.81 kWh/m² in June across the year — August's 4.73 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
115.0Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.3Bright
254.3Bright
264.3Bright
274.2Bright
284.2Bright
294.2Bright
304.1Bright
314.1Bright
Planning a trip in August

Hazard calendar for Seaford

In seasonPeak

In August, Seaford sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Seaford's rainy season runs August–February, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Seaford?

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

6.1
Sightseeing
1st-best month of the year
2.0
Beach & pool
1st-best month of the year

August is a reasonable time to visit Seaford for sightseeing.

What to pack for Seaford in August

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

In August, Seaford sees daytime highs around 18°C and nights near 16°C. Worth packing: rain gear, sun protection and a windbreaker. About 9 days see rain.

rain gearsun protectiona windbreaker

Sea temperature near Seaford in August

The nearest coast averages about 17°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 16 km away) is warmest in August at about 17°C and coldest in March near 8°C.

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

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan10Bracing
Feb9Bracing
Mar8Bracing
Apr9Bracing
May11Bracing
Jun13Bracing
Jul16Cool
Aug17Cool
Sep17Cool
Oct16Cool
Nov14Bracing
Dec12Bracing

UV index in Seaford 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 Seaford 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
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Seaford?

Seaford sits at 50.8°N, 0.1°E, 10 m above sea level, in United Kingdom. The nearest listed city is Peacehaven, 8.0 km away.

Topography around Seaford

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

Within 3 km, the terrain around Seaford has only modest variations in elevation — a maximum elevation change of 106 m around an average of 21 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 214 m; within 80 km, significant variations in elevation — a maximum elevation change of 302 m.

The land around Seaford is covered by water (43%) and grassland (23%) within 3 km, water (51%) and grassland (25%) within 16 km, and water (40%), grassland (23%) and trees (21%) within 80 km.

3 km
106 m
16 km
214 m
80 km
302 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Peacehaven 8.0 km · Rottingdean 12 km · Eastbourne 13 km · Lewes 13 km · Hailsham 15 km · Brighton 18 km · Hove 20 km · Uckfield 22 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 Seaford (50.7714°, 0.1027°, elevation 10 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).