Perth weather in August

In August, Perth sees average daytime highs of 18°C and overnight lows near 10°C, with 87 mm of rain across 13.8 wet days and about 14.9 hours of daylight. It is the 2nd-warmest and 5th-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 7% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 hours at the start of August to 13 h 42 min by month's end. Set against the rest of the year, August is Perth's 9th-clearest and 11th-windiest month. For the whole year in context, see Perth's year-round climate.

Daytime high
18°
2nd warmest
Overnight low
10°
11th coldest
Rainfall
87 mm
13.8 wet days
Daylight
14 h 54 min
4:51 AM – 7:45 PM
Cloud cover
77%
9th clearest
Wind
11 km/h
11th windiest
Solar energy
3.53 kWh/m²
Travel score
5.0
out of 10

Perth is city in Perth and Kinross, Scotland, United Kingdom.

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 Perth reaches about 18°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 21°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11811
21811
31811
41811
51811
61811
71811
81811
91811
101811
111811
121811
131811
141811
151811
161811
171811
181810
191810
201710
211710
221710
231710
241710
251710
261710
271710
281710
291710
301710
311710

How August really feels in Perth

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.

Perth weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 10015.55.77.30.2
Feb / 7612.34.59.10.5
Mar / 7513.73.611.41.3
Apr11° / 6412.61.213.92.4
May14° / 7112.80.116.13.6
Jun16° / 7413.3017.34.4
Jul18° / 11°8214.2016.85.1
Aug18° / 10°8713.8014.95.0
Sep15° / 6911.7012.54.2
Oct12° / 10113.80.110.12.7
Nov / 9014.21.17.91.2
Dec / 9113.236.70.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22080
32080
42080
52080
62080
71981
81981
91981
102080
112080
121981
131981
141981
151981
161981
172179
182179
192179
202278
212278
222278
232377
242377
252377
262377
272476
282476
292575
302575
312575

Chance of precipitation in August

Any precipitation

Perth gets around 87 mm of rain over 13.8 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 45% and peaks near 48% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
145
244
344
444
544
644
744
845
945
1045
1146
1247
1347
1448
1548
1648
1748
1848
1948
2047
2147
2246
2345
2444
2543
2642
2741
2840
2939
3038
3138

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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
173252
274242
374242
475232
575223
675223
776213
877203
977203
1078193
1178193
1279183
1379183
1479183
1579183
1680173
1780173
1881172
1982162
2082162
2184151
2285141
2385141
2486131
2587121
2688120
2789110
2889110
2990100
3090100
319190

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 hours at the start of August to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 138 minutes over August. Sunrise moves from 4:21 AM to 5:21 AM, and sunset from 8:19 PM to 7:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.04:218:19
215.94:238:17
315.84:258:15
415.84:278:12
515.74:298:10
615.64:318:08
715.64:338:06
815.54:358:04
915.44:378:02
1015.34:397:59
1115.34:417:57
1215.24:437:55
1315.14:457:52
1415.14:477:50
1515.04:497:47
1614.94:517:45
1714.84:537:43
1814.84:557:40
1914.74:577:38
2014.64:597:35
2114.55:017:33
2214.55:037:30
2314.45:057:27
2414.35:077:25
2514.25:097:22
2614.15:117:20
2714.15:137:17
2814.05:157:14
2913.95:177:12
3013.85:197:09
3113.75:217:06

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.53 kWh/m².

For context, solar energy here swings from a low near 0.34 kWh/m² to a high of 4.71 kWh/m² in May across the year — August's 3.53 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.3Moderate
243.3Moderate
253.3Moderate
263.2Moderate
273.2Moderate
283.2Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in August

Is August a good time to visit Perth?

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

5.0
Sightseeing
2nd-best month of the year
1.5
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Perth for sightseeing.

What to pack for Perth in August

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

In August, Perth sees daytime highs around 18°C and nights near 10°C. Worth packing: rain gear. About 14 days see rain.

rain gear

Sea temperature near Perth in August

The nearest coast averages about 14°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 36 km away) is warmest in August at about 14°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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan7Bracing
Feb6Bracing
Mar6Bracing
Apr7Bracing
May10Bracing
Jun12Bracing
Jul14Bracing
Aug14Bracing
Sep13Bracing
Oct12Bracing
Nov10Bracing
Dec8Bracing

UV index in Perth in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Perth peaks around June 23 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun5High
Jul5High
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Perth?

Perth sits at 56.4°N, 3.4°W, 10 m above sea level, in United Kingdom. The nearest listed city is Glenrothes, 27 km away.

Topography around Perth

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

Within 3 km, the terrain around Perth has only modest variations in elevation — a maximum elevation change of 222 m around an average of 54 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 415 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,320 m.

The land around Perth is covered by trees (32%), grassland (29%) and artificial surfaces (24%) within 3 km, cropland (37%), grassland (36%) and trees (21%) within 16 km, and grassland (55%) within 80 km.

3 km
222 m
16 km
415 m
80 km
1,320 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Glenrothes 27 km · Dundee 29 km · Kirkcaldy 35 km · Dunfermline 36 km · Alloa 38 km · Saint Andrews 39 km · Stirling 44 km · Grangemouth 46 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 Perth (56.3952°, -3.4314°, 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).