Perth, United Kingdom experiences average highs of 12°C (54°F) and lows of 6°C (43°F) throughout the year. Rainfall is frequent, averaging about 13 rainy days per month. Average highs have warmed by 1.2°C (2.2°F) across the available records.
Perth, United Kingdom Weather & Climate 2026
Monthly climate averages for Perth, United Kingdom. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Nov 
Wetter season: Feb–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.2/10
Best: May, June, July, August, September
UV Index
3
Low
Temperature 12°C / 6°C
Feels Like 10°C / 3°C
Rainy Days 13
Rainfall 82 mm
Sunshine 7 h
Humidity 83%
Wind Speed 17 km/h
Dew Point 6°C
Snow Days 5 days
Frost Days 7 days
Hottest Month
19°C
July
Avg Low12°C
Rain14days
Coldest Month
1°C
January
Avg High6°C
Rain13days
Driest Month
11days
April
Avg High11°C
Avg Low3°C
Windiest Month
20 km/h
February (Gusts 47)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 04:25
Daylight 17.7h
Sunset 22:06
Live conditions—
Perth on the map · live conditions
Perth, United Kingdom
- Continent
- Europe
- Country
- United Kingdom
- City
- Perth
- Population
- 47.4K
- Coordinates
- 56.40°, -3.43°
Seasonal Breakdown
Spring
Mar–May
Avg High 12°C
Avg Low 4°C
Rain 12 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 18°C
Avg Low 11°C
Rain 14 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 12°C
Avg Low 6°C
Rain 14 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 6°C
Avg Low 1°C
Rain 14 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 6°C / 1°C . Feb: 7°C / 1°C . Mar: 9°C / 2°C . Apr: 11°C / 3°C . May: 15°C / 7°C . Jun: 17°C / 10°C . Jul: 19°C / 12°C . Aug: 18°C / 12°C . Sep: 16°C / 9°C . Oct: 12°C / 7°C . Nov: 8°C / 3°C . Dec: 7°C / 2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 82 mm. Feb: 91 mm. Mar: 78 mm. Apr: 50 mm. May: 61 mm. Jun: 70 mm. Jul: 84 mm. Aug: 86 mm. Sep: 76 mm. Oct: 117 mm. Nov: 86 mm. Dec: 101 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 89%. Feb: 85%. Mar: 82%. Apr: 78%. May: 76%. Jun: 77%. Jul: 78%. Aug: 80%. Sep: 82%. Oct: 86%. Nov: 89%. Dec: 91%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 18 km/h . Feb: 20 km/h . Mar: 18 km/h . Apr: 17 km/h . May: 16 km/h . Jun: 17 km/h . Jul: 16 km/h . Aug: 17 km/h . Sep: 17 km/h . Oct: 19 km/h . Nov: 17 km/h . Dec: 17 km/h .
Sunshine
Sunshine
Sunshine: Jan: 3h. Feb: 5h. Mar: 7h. Apr: 9h. May: 10h. Jun: 10h. Jul: 10h. Aug: 9h. Sep: 7h. Oct: 5h. Nov: 3h. Dec: 2h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 1. Feb: UV 1. Mar: UV 3. Apr: UV 4. May: UV 5. Jun: UV 6. Jul: UV 5. Aug: UV 5. Sep: UV 3. Oct: UV 2. Nov: UV 1. Dec: UV 1.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 7 days. Feb: 8 days. Mar: 5 days. Apr: 2 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 2 days. Dec: 5 days.
Climate Trends
Average highs have warmed by 1.2°C (2.2°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 20°C | Jul · 19°C |
| Coldest month | Jan 2025 · 1°C | Jan · 1°C |
| Wettest month | Oct 2025 · 115 mm | Oct · 117 mm |
| Windiest month | Jun 2025 · 19 km/h | Feb · 20 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May best
Fair June best
Good July best
Good August best
Good September best
Good October
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 6°C / 1°C | 2°C / -3°C | 13days (82 mm) Wet | 3h Poor | 89% Very Muggy | 0.7 Low | Poor | View Details |
| February | 7°C / 1°C | 3°C / -3°C | 14days (91 mm) Wet | 4.7h Fair | 85% Humid | 1.2 Low | Poor | View Details |
| March | 9°C / 2°C | 5°C / -2°C | 14days (78 mm) Wet | 6.5h Fair | 82% Humid | 2.5 Moderate | Poor | View Details |
| April | 11°C / 3°C | 8°C / 0°C | 11days (50 mm) Wet | 8.8h Good | 78% Humid | 3.8 Moderate | Poor | View Details |
| May best | 15°C / 7°C | 13°C / 5°C | 12days (61 mm) Wet | 10.2h Excellent | 76% Humid | 5.2 High | Fair | View Details |
| June best | 17°C / 10°C | 16°C / 8°C | 13days (70 mm) Wet | 10.3h Excellent | 77% Humid | 5.5 High | Good | View Details |
| July best | 19°C / 12°C | 18°C / 11°C | 14days (84 mm) Wet | 9.6h Good | 78% Humid | 5.1 High | Good | View Details |
| August best | 18°C / 12°C | 17°C / 10°C | 14days (86 mm) Wet | 8.7h Good | 80% Humid | 4.6 Moderate | Good | View Details |
| September best | 16°C / 9°C | 14°C / 7°C | 13days (76 mm) Wet | 7h Good | 82% Humid | 3.3 Moderate | Good | View Details |
| October | 12°C / 7°C | 10°C / 4°C | 15days (117 mm) Wet | 4.6h Fair | 86% Very Muggy | 1.7 Low | Poor | View Details |
| November | 8°C / 3°C | 6°C / 0°C | 13days (86 mm) Wet | 3.3h Poor | 89% Very Muggy | 0.8 Low | Poor | View Details |
| December | 7°C / 2°C | 3°C / -2°C | 15days (101 mm) Wet | 2h Poor | 91% Very Muggy | 0.5 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Perth are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Perth, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Perth is July, with average daytime highs of 19°C (66°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Perth is January, with average overnight lows of 1°C (33°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Perth is October, averaging 117mm of precipitation across 15 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Perth runs through October, December, February, March, with the heaviest rainfall in October. Based on 10-year averages for Perth.
Perth receives approximately 79 sunshine hours per year. The sunniest month is June with around 10 hours. Based on climate data for Perth.
The least favorable months to visit Perth are January, February, March, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Perth is 3, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Perth is 83%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes, Perth receives snow. Months with snowfall average 5 snow days and 8 cm (3 in) of accumulation, with about 7 frost days during winter.
Average wind speeds in Perth are 17 km/h (11 mph). The windiest month is February with peak winds reaching 20 km/h (12 mph) (gusts up to 47 km/h / 29 mph).
Perth averages 1 clear-sky days per month with overall cloud cover around 74%. The clearest skies occur in April.
The annual average dew point in Perth is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Perth has a Oceanic climate, classified as Cfb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Perth ranges from 3°C (37°F) to 10°C (50°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Perth. It earns a climate score of 7/10 with Good.
For June in Perth, pack Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. With average highs of 17°C (63°F) and 13 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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