Stromness, United Kingdom experiences average highs of 10°C (50°F) and lows of 8°C (46°F) throughout the year. Rainfall is frequent, averaging about 17 rainy days per month. Average highs have warmed by 1.0°C (1.8°F) across the available records.
Stromness, United Kingdom Weather & Climate 2026
Monthly climate averages for Stromness, United Kingdom. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Mar–Aug 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
2.9/10
Best: July, August
UV Index
3
Low
Temperature 10°C / 8°C
Feels Like 6°C / 2°C
Rainy Days 17
Rainfall 92 mm
Sunshine 7 h
Humidity 80%
Wind Speed 39 km/h
Dew Point 6°C
Snow Days 2 days
Frost Days 1 days
Hottest Month
14°C
August
Avg Low12°C
Rain14days
Coldest Month
5°C
February
Avg High7°C
Rain17days
Driest Month
11days
May
Avg High10°C
Avg Low8°C
Windiest Month
48 km/h
January (Gusts 67)
Sea Temperature
8°C – 14°C
Warmest water: August (
13.7°C
)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, heavy rainfall.
Sun Position
Sunrise 04:02
Daylight 18.4h
Sunset 22:28
Live conditions—
Stromness on the map · live conditions
Stromness, United Kingdom
- Continent
- Europe
- Country
- United Kingdom
- City
- Stromness
- Population
- 1.7K
- Coordinates
- 58.96°, -3.30°
Seasonal Breakdown
Spring
Mar–May
Avg High 9°C
Avg Low 6°C
Rain 13 days/mo
Summer
Jun–Aug
Avg High 13°C
Avg Low 11°C
Rain 13 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 12°C
Avg Low 9°C
Rain 20 days/mo
Winter
Dec–Feb
Avg High 7°C
Avg Low 5°C
Rain 20 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: 7°C / 5°C . Feb: 7°C / 5°C . Mar: 7°C / 5°C . Apr: 8°C / 6°C . May: 10°C / 8°C . Jun: 12°C / 10°C . Jul: 14°C / 12°C . Aug: 14°C / 12°C . Sep: 14°C / 12°C . Oct: 12°C / 10°C . Nov: 9°C / 7°C . Dec: 8°C / 6°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 123 mm. Feb: 97 mm. Mar: 82 mm. Apr: 50 mm. May: 53 mm. Jun: 58 mm. Jul: 68 mm. Aug: 73 mm. Sep: 111 mm. Oct: 133 mm. Nov: 127 mm. Dec: 129 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 76%. Mar: 78%. Apr: 78%. May: 83%. Jun: 85%. Jul: 87%. Aug: 84%. Sep: 82%. Oct: 79%. Nov: 77%. Dec: 78%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 48 km/h . Feb: 46 km/h . Mar: 42 km/h . Apr: 37 km/h . May: 32 km/h . Jun: 33 km/h . Jul: 30 km/h . Aug: 32 km/h . Sep: 39 km/h . Oct: 44 km/h . Nov: 45 km/h . Dec: 46 km/h .
Sunshine
Sunshine
Sunshine: Jan: 3h. Feb: 5h. Mar: 7h. Apr: 10h. May: 11h. Jun: 12h. Jul: 11h. Aug: 10h. Sep: 8h. Oct: 5h. Nov: 3h. Dec: 2h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 9°C . Feb: 8°C . Mar: 8°C . Apr: 8°C . May: 10°C . Jun: 12°C . Jul: 13°C . Aug: 14°C . Sep: 14°C . Oct: 13°C . Nov: 11°C . Dec: 10°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 5. Jul: UV 5. Aug: UV 5. Sep: UV 3. Oct: UV 1. Nov: UV 1. Dec: UV 0.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 3 days. Feb: 2 days. Mar: 1 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: 2 days.
Climate Trends
Average highs have warmed by 1.0°C (1.8°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 · 15°C | Aug · 14°C |
| Coldest month | Jan 2025 · 5°C | Feb · 5°C |
| Wettest month | Oct 2025 · 146 mm | Oct · 133 mm |
| Windiest month | Oct 2025 · 47 km/h | Jan · 48 km/h |
Month-by-Month Weather Table
January
Wet 
February
Poor March
Poor April
Poor May
Poor June
Fair July best
Fair August best
Fair September
Wet October
Wet November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / 5°C | 1°C / -3°C | 21days (123 mm) Wet | 2.6h Poor | 77% Humid | 0.5 Low | Wet | View Details |
| February | 7°C / 5°C | 1°C / -3°C | 17days (97 mm) Wet | 5.2h Fair | 76% Humid | 1.2 Low | Poor | View Details |
| March | 7°C / 5°C | 2°C / -2°C | 16days (82 mm) Wet | 7.1h Good | 78% Humid | 2.5 Moderate | Poor | View Details |
| April | 8°C / 6°C | 3°C / 0°C | 12days (50 mm) Wet | 10h Excellent | 78% Humid | 3.9 Moderate | Poor | View Details |
| May | 10°C / 8°C | 7°C / 3°C | 11days (53 mm) Wet | 10.9h Excellent | 83% Humid | 5 Moderate | Poor | View Details |
| June | 12°C / 10°C | 9°C / 6°C | 12days (58 mm) Wet | 11.7h Excellent | 85% Humid | 5.3 High | Fair | View Details |
| July best | 14°C / 12°C | 12°C / 8°C | 14days (68 mm) Wet | 10.5h Excellent | 87% Very Muggy | 4.9 Moderate | Fair | View Details |
| August best | 14°C / 12°C | 12°C / 9°C | 14days (73 mm) Wet | 10h Excellent | 84% Humid | 4.5 Moderate | Fair | View Details |
| September | 14°C / 12°C | 10°C / 7°C | 18days (111 mm) Wet | 7.8h Good | 82% Humid | 3 Moderate | Wet | View Details |
| October | 12°C / 10°C | 7°C / 3°C | 21days (133 mm) Wet | 5.1h Fair | 79% Humid | 1.4 Low | Wet | View Details |
| November | 9°C / 7°C | 4°C / 0°C | 21days (127 mm) Wet | 3.2h Poor | 77% Humid | 0.6 Low | Wet | View Details |
| December | 8°C / 6°C | 3°C / -1°C | 21days (129 mm) Wet | 1.9h Poor | 78% Humid | 0.3 Low | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Stromness are July, August, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Stromness, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Stromness is August, with average daytime highs of 14°C (58°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Stromness is February, with average overnight lows of 5°C (40°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Stromness is October, averaging 133mm of precipitation across 21 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Stromness runs through January, October, November, December, with the heaviest rainfall in January. Based on 10-year averages for Stromness.
Stromness receives approximately 86 sunshine hours per year. The sunniest month is June with around 12 hours. Based on climate data for Stromness.
The least favorable months to visit Stromness are January, February, November, December, primarily due to very cold temperatures, heavy rainfall. For the best conditions, consider July, August instead.
The annual average UV index in Stromness is 3, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Stromness is 80%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 11°C (52°F), which most swimmers will find too cold without a wetsuit.
Yes, Stromness receives snow. Months with snowfall average 2 snow days and 2 cm (1 in) of accumulation, with about 1 frost days during winter.
Average wind speeds in Stromness are 39 km/h (24 mph). The windiest month is January with peak winds reaching 48 km/h (30 mph) (gusts up to 67 km/h / 41 mph).
Stromness averages 0 clear-sky days per month with overall cloud cover around 74%. The clearest skies occur in May.
The annual average dew point in Stromness is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Stromness 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 Stromness ranges from 2°C (36°F) to 6°C (43°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
June is not the best time to visit Stromness, with a climate score of 4.7/10. Consider visiting during July, August instead for better conditions.
For June in Stromness, pack Layered clothing, Light jacket, Umbrella, Waterproof jacket, Comfortable walking shoes. With average highs of 12°C (54°F) and 12 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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