Arnside, United Kingdom experiences average highs of 12°C (54°F) and lows of 7°C (45°F) throughout the year. Rainfall is frequent, averaging about 16 rainy days per month. Average highs have warmed by 0.7°C (1.3°F) across the available records.
Arnside, United Kingdom Weather & Climate 2026
Monthly climate averages for Arnside, United Kingdom. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Sep 
Wetter season: Aug–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.1/10
Best: May, June, July, August, September
UV Index
3
Low
Temperature 12°C / 7°C
Feels Like 10°C / 4°C
Rainy Days 16
Rainfall 117 mm
Sunshine 7 h
Humidity 84%
Wind Speed 20 km/h
Dew Point 7°C
Snow Days 3 days
Frost Days 5 days
Hottest Month
18°C
July
Avg Low13°C
Rain16days
Coldest Month
2°C
January
Avg High6°C
Rain15days
Driest Month
12days
April
Avg High11°C
Avg Low5°C
Windiest Month
24 km/h
February (Gusts 53)
Sea Temperature
5°C – 19°C
Warmest water: July (
18.5°C
)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, heavy rainfall.
Sun Position
Sunrise 04:39
Daylight 17.2h
Sunset 21:48
Live conditions—
Arnside on the map · live conditions
Arnside, United Kingdom
- Continent
- Europe
- Country
- United Kingdom
- City
- Arnside
- Population
- 2.3K
- Coordinates
- 54.20°, -2.83°
Seasonal Breakdown
Spring
Mar–May
Avg High 12°C
Avg Low 5°C
Rain 13 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 18°C
Avg Low 12°C
Rain 17 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 13°C
Avg Low 8°C
Rain 17 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 7°C
Avg Low 3°C
Rain 16 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 / 2°C . Feb: 7°C / 3°C . Mar: 9°C / 3°C . Apr: 11°C / 5°C . May: 15°C / 8°C . Jun: 17°C / 11°C . Jul: 18°C / 13°C . Aug: 18°C / 13°C . Sep: 16°C / 11°C . Oct: 13°C / 9°C . Nov: 9°C / 5°C . Dec: 7°C / 4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 129 mm. Feb: 133 mm. Mar: 109 mm. Apr: 69 mm. May: 72 mm. Jun: 102 mm. Jul: 115 mm. Aug: 126 mm. Sep: 135 mm. Oct: 143 mm. Nov: 128 mm. Dec: 144 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 89%. Feb: 86%. Mar: 84%. Apr: 78%. May: 79%. Jun: 80%. Jul: 82%. Aug: 84%. Sep: 84%. Oct: 86%. Nov: 88%. Dec: 91%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 21 km/h . Feb: 24 km/h . Mar: 21 km/h . Apr: 19 km/h . May: 18 km/h . Jun: 18 km/h . Jul: 18 km/h . Aug: 19 km/h . Sep: 20 km/h . Oct: 22 km/h . Nov: 21 km/h . Dec: 22 km/h .
Sunshine
Sunshine
Sunshine: Jan: 3h. Feb: 5h. Mar: 7h. Apr: 9h. May: 11h. Jun: 11h. Jul: 10h. Aug: 9h. Sep: 7h. Oct: 5h. Nov: 3h. Dec: 2h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 5°C . Feb: 6°C . Mar: 7°C . Apr: 10°C . May: 15°C . Jun: 18°C . Jul: 19°C . Aug: 19°C . Sep: 17°C . Oct: 13°C . Nov: 10°C . Dec: 7°C .
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: 6 days. Feb: 5 days. Mar: 4 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 1 days. Dec: 3 days.
Climate Trends
Average highs have warmed by 0.7°C (1.3°F) across the available records. Average rainfall is trending wetter by about 14 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 19°C | Jul · 18°C |
| Coldest month | Jan 2025 · 0°C | Jan · 2°C |
| Wettest month | Sep 2025 · 236 mm | Dec · 144 mm |
| Windiest month | Dec 2025 · 24 km/h | Feb · 24 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
Wet September best
Fair October
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 6°C / 2°C | 3°C / -2°C | 15days (129 mm) Wet | 3h Poor | 89% Very Muggy | 0.8 Low | Poor | View Details |
| February | 7°C / 3°C | 3°C / -1°C | 16days (133 mm) Wet | 4.6h Fair | 86% Very Muggy | 1.4 Low | Poor | View Details |
| March | 9°C / 3°C | 5°C / -1°C | 15days (109 mm) Wet | 6.7h Fair | 84% Humid | 2.9 Moderate | Poor | View Details |
| April | 11°C / 5°C | 8°C / 1°C | 12days (69 mm) Wet | 9.4h Good | 78% Humid | 4.1 Moderate | Poor | View Details |
| May best | 15°C / 8°C | 13°C / 6°C | 12days (72 mm) Wet | 10.7h Excellent | 79% Humid | 5.2 High | Fair | View Details |
| June best | 17°C / 11°C | 16°C / 10°C | 16days (102 mm) Wet | 10.9h Excellent | 80% Humid | 5.8 High | Good | View Details |
| July best | 18°C / 13°C | 18°C / 12°C | 16days (115 mm) Wet | 10.1h Excellent | 82% Humid | 5.1 High | Good | View Details |
| August best | 18°C / 13°C | 17°C / 12°C | 18days (126 mm) Wet | 9.1h Good | 84% Humid | 4.7 Moderate | Wet | View Details |
| September best | 16°C / 11°C | 15°C / 9°C | 16days (135 mm) Wet | 7.1h Good | 84% Humid | 3.4 Moderate | Fair | View Details |
| October | 13°C / 9°C | 10°C / 6°C | 17days (143 mm) Wet | 4.8h Fair | 86% Very Muggy | 2 Low | Poor | View Details |
| November | 9°C / 5°C | 6°C / 2°C | 17days (128 mm) Wet | 3.3h Poor | 88% Very Muggy | 1 Low | Poor | View Details |
| December | 7°C / 4°C | 4°C / 0°C | 17days (144 mm) Wet | 2.3h Poor | 91% Very Muggy | 0.6 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Arnside 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 Arnside, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Arnside is July, with average daytime highs of 18°C (65°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Arnside is January, with average overnight lows of 2°C (36°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Arnside is December, averaging 144mm of precipitation across 17 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Arnside runs through August, October, November, December, with the heaviest rainfall in August. Based on 10-year averages for Arnside.
Arnside receives approximately 82 sunshine hours per year. The sunniest month is June with around 11 hours. Based on climate data for Arnside.
The least favorable months to visit Arnside are January, February, March, December, primarily due to very cold temperatures, heavy rainfall. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Arnside is 3, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Arnside is 84%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Sea temperatures in Summer average 12°C (54°F), which most swimmers will find too cold without a wetsuit.
Yes, Arnside receives snow. Months with snowfall average 3 snow days and 4 cm (2 in) of accumulation, with about 5 frost days during winter.
Average wind speeds in Arnside are 20 km/h (12 mph). The windiest month is February with peak winds reaching 24 km/h (15 mph) (gusts up to 53 km/h / 33 mph).
Arnside 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 Arnside is 7°C (45°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Arnside 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 Arnside ranges from 4°C (39°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 Arnside. It earns a climate score of 6.5/10 with Good.
For June in Arnside, pack Layered clothing, Light jacket, Umbrella, Waterproof jacket, Waterproof shoes. With average highs of 17°C (63°F) and 16 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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