Penzance weather in August

In August, Penzance sees average daytime highs of 18°C and overnight lows near 16°C, with 63 mm of rain across 10.5 wet days and about 14.3 hours of daylight. It is the 1st-warmest and 6th-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 22% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 15 h 06 min at the start of August to 13 h 24 min by month's end. Set against the rest of the year, August is Penzance's 5th-clearest and 11th-windiest month. For the whole year in context, see Penzance's year-round climate.

Daytime high
18°
1st warmest
Overnight low
16°
12th coldest
Rainfall
63 mm
10.5 wet days
Daylight
14 h 18 min
5:18 AM – 7:35 PM
Cloud cover
64%
5th clearest
Wind
21 km/h
11th windiest
Solar energy
4.62 kWh/m²
Travel score
5.6
out of 10

Penzance is town and civil parish in Cornwall, England, UK.

Density
1,538/km²
people per km²
Founded
1318

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 Penzance 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 16°C and 19°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.

10°13°15°18°20°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
211715
221715
231715
241715
251715
261715
271715
281715
291715
301715
311715

Penzance weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan10° / 9715.68.31.8
Feb / 7312.39.71.7
Mar10° / 6312.211.52.0
Apr11° / 5711.213.52.6
May13° / 11°549.915.23.6
Jun15° / 13°509.216.14.7
Jul17° / 15°549.115.75.6
Aug18° / 16°6310.514.35.6
Sep16° / 14°5710.212.45.1
Oct14° / 12°941410.53.8
Nov12° / 10°10415.98.82.7
Dec11° / 10416.47.92.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34357
44357
54357
64258
74159
84258
94159
104159
114060
124060
134060
144060
153961
163961
173862
183862
193862
203961
214060
224060
234159
244159
254159
264357
274258
284357
294357
304357
314456

Chance of precipitation in August

Any precipitation

Penzance gets around 63 mm of rain over 10.5 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 34% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
131
231
331
431
531
632
732
832
932
1033
1133
1234
1334
1435
1536
1637
1737
1837
1937
2037
2137
2236
2336
2435
2534
2634
2733
2832
2931
3031
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 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1275518
2285418
3285418
4295318
5295318
6305119
7305119
8315019
9315019
10324919
11324919
12334918
13334918
14334918
15334917
16334917
17335017
18345016
19345016
20345115
21355015
22365014
23375013
24385013
25384912
26394911
27404911
28414910
29424810
3043489
3144479

Wind in August

Winds average 21 km/h in August.

Across August, daily wind ranges from about 21 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
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 06 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 102 minutes over August. Sunrise moves from 4:55 AM to 5:41 AM, and sunset from 8:01 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.14:558:01
215.04:578:00
315.04:587:58
414.95:007:56
514.95:017:55
614.85:037:53
714.85:047:51
814.75:067:50
914.75:077:48
1014.65:087:46
1114.65:107:44
1214.55:117:42
1314.55:137:41
1414.45:157:39
1514.35:167:37
1614.35:187:35
1714.25:197:33
1814.25:217:31
1914.15:227:29
2014.15:247:27
2114.05:257:25
2213.95:277:23
2313.95:287:21
2413.85:307:19
2513.85:317:17
2613.75:337:15
2713.65:347:12
2813.65:367:10
2913.55:387:08
3013.45:397:06
3113.45:417:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.62 kWh/m².

For context, solar energy here swings from a low near 0.75 kWh/m² to a high of 5.8 kWh/m² in June across the year — August's 4.62 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.8Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.7Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.5Bright
214.4Bright
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

Is August a good time to visit Penzance?

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

5.6
Sightseeing
1st-best month of the year
1.6
Beach & pool
1st-best month of the year

August is a reasonable time to visit Penzance for sightseeing.

What to pack for Penzance in August

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

In August, Penzance sees daytime highs around 18°C and nights near 16°C. Worth packing: rain gear, sun protection and a windbreaker. About 11 days see rain.

rain gearsun protectiona windbreaker

Sea temperature near Penzance 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 offshore is warmest in August at about 17°C and coldest in March near 10°C.

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

10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan10Bracing
Feb10Bracing
Mar10Bracing
Apr10Bracing
May12Bracing
Jun14Bracing
Jul16Cool
Aug17Cool
Sep16Cool
Oct14Bracing
Nov13Bracing
Dec12Bracing

UV index in Penzance in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Penzance peaks around August 14 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 11 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 14UV 7Jan 11UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr5Moderate
May6High
Jun6High
Jul6High
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Penzance?

Penzance sits at 50.1°N, 5.5°W, 32 m above sea level, in United Kingdom. The nearest listed city is Camborne, 20 km away.

Saltash

Topography around Penzance

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

Within 3 km, the terrain around Penzance has only modest variations in elevation — a maximum elevation change of 138 m around an average of 45 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 248 m; within 80 km, significant variations in elevation — a maximum elevation change of 362 m.

The land around Penzance is covered by water (35%), grassland (23%) and trees (21%) within 3 km, water (59%) and grassland (23%) within 16 km, and water (81%) within 80 km.

3 km
138 m
16 km
248 m
80 km
362 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Camborne 20 km · Redruth 26 km · Falmouth 33 km · Truro 38 km · Newquay 47 km · St Austell 60 km · Bodmin 70 km · Saltash 99 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 Penzance (50.1186°, -5.5371°, elevation 32 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).