Portslade weather in August

In August, Portslade sees average daytime highs of 18°C and overnight lows near 16°C, with 62 mm of rain across 9.3 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 Portslade's 2nd-clearest and 10th-windiest month. For the whole year in context, see Portslade's year-round climate.

Daytime high
18°
1st warmest
Overnight low
16°
12th coldest
Rainfall
62 mm
9.3 wet days
Daylight
14 h 24 min
4:54 AM – 7:16 PM
Cloud cover
58%
2nd clearest
Wind
21 km/h
10th windiest
Solar energy
4.68 kWh/m²
Travel score
6.1
out of 10

Portslade is area of the city of Brighton and Hove, England.

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 Portslade 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
291816
301815
311815

Portslade 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 / 9014.10.58.21.3
Feb / 6311.10.59.71.2
Mar / 509.90.311.51.7
Apr10° / 489.3013.52.5
May13° / 10°468.5015.23.6
Jun15° / 13°478.5016.24.8
Jul17° / 15°498.8015.85.9
Aug18° / 16°629.3014.36.1
Sep17° / 15°6710.7012.45.4
Oct15° / 12°10813.9010.44.0
Nov12° / 11615.408.72.6
Dec / 10314.10.37.81.8

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 (%)
15644
25644
35644
45644
55545
65545
75545
85347
95347
105248
115248
125248
135149
145149
155149
165050
175050
184951
194852
204852
214852
224852
234654
244654
254654
264555
274555
284555
294456
304555
314654

Chance of precipitation in August

Any precipitation

Portslade gets around 62 mm of rain over 9.3 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 (%)
129
229
329
430
530
630
730
830
930
1030
1130
1231
1331
1431
1531
1631
1731
1831
1931
2031
2131
2231
2331
2431
2531
2631
2731
2830
2930
3030
3130

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 (%)
11959220
21958230
31958230
41957231
52056231
62056231
72155231
82155231
92254231
102254231
112353231
122353231
132452231
142453221
152552221
162552221
172552221
182651221
192652211
202752210
212851210
222951200
233149200
243248190
253447190
263547180
273746180
283845170
294044160
304143160
314342150

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
220light breeze
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
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 4:32 AM to 5:18 AM, and sunset from 7:42 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.24:327:42
215.14:337:41
315.14:347:39
415.04:367:37
515.04:377:36
614.94:397:34
714.94:407:32
814.84:427:31
914.84:447:29
1014.74:457:27
1114.64:477:25
1214.64:487:23
1314.54:507:21
1414.54:517:19
1514.44:537:17
1614.44:547:16
1714.34:567:14
1814.24:587:11
1914.24:597:09
2014.15:017:07
2114.05:027:05
2214.05:047:03
2313.95:057:01
2413.95:076:59
2513.85:096:57
2613.75:106:55
2713.75:126:52
2813.65:136:50
2913.55:156:48
3013.55:176:46
3113.45:186:44

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.68 kWh/m².

For context, solar energy here swings from a low near 0.71 kWh/m² to a high of 5.77 kWh/m² in June across the year — August's 4.68 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.2Bright
65.1Bright
75.1Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.5Bright
204.5Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.2Bright
294.1Bright
304.1Bright
314.0Bright
Planning a trip in August

Is August a good time to visit Portslade?

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
2.1
Beach & pool
1st-best month of the year

August is a reasonable time to visit Portslade for sightseeing.

What to pack for Portslade in August

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

In August, Portslade 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 Portslade 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 25 km away) is warmest in September 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 Portslade 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 Portslade 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 Portslade?

Portslade sits at 50.8°N, 0.2°W, 40 m above sea level, in United Kingdom. The nearest listed city is Hove, 4.0 km away.

Topography around Portslade

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

Within 3 km, the terrain around Portslade has only modest variations in elevation — a maximum elevation change of 146 m around an average of 44 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 247 m; within 80 km, significant variations in elevation — a maximum elevation change of 301 m.

The land around Portslade is covered by artificial surfaces (34%) and grassland (24%) within 3 km, water (38%) and grassland (31%) within 16 km, and water (34%), grassland (24%) and trees (23%) within 80 km.

3 km
146 m
16 km
247 m
80 km
301 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Hove 4.0 km · Shoreham-by-Sea 4.0 km · Brighton 6.0 km · Lancing 8.0 km · Worthing 12 km · Rottingdean 12 km · Burgess Hill 14 km · Peacehaven 16 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 Portslade (50.8429°, -0.2161°, elevation 40 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).