Isla Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Isla.
Climate overview of Isla
Isla, Cantabria, Spain, has a moderate seasonal temperature range, with August reaching 24°C (75°F) and January cooling to 13°C (55°F).
Rainfall is high, totalling around 1163 mm (46 in) per year. November is the wettest month and July the driest. The city also experiences warm summers and mild winters. The most sunshine falls in July, with an average of 7.5 hours of daily sunshine.
Isla Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Isla - and find the best time to visit.
Monthly Temperature in Isla
The weather in Isla changes moderately throughout the year, offering enough variation to appreciate each season. Average maximum daytime temperatures range from a comfortable 24°C (75°F) in August, the warmest time of the year, to a moderate 13°C (55°F) during cooler months like January.
At night, you can expect temperatures ranging from 18°C (64°F) in August to around 8°C (46°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Isla
Isla is known for its substantial rainfall, with annual precipitation reaching 1163 mm (46 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, November it receives high rainfall, averaging 148 mm (5.8 in) of precipitation, recorded across 18 rainy days. In contrast, the driest month July brings less rainfall, with 57 mm (2.2 in) over 11 rainy days. For more details, please visit our Isla Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Isla
Seasonal changes in sunshine hours are quite dramatic in Isla. While July receives considerable daily sunshine with up to 7.5 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Water Temperature in Isla
The mean water temperature over the year ranges from 12°C (54°F) in January to 20°C (68°F) in August.
Water temperature over the year
Humidity in Isla by Month
The relative humidity is high throughout the year in Isla.
The city experiences its highest humidity in August, reaching 78%. In January, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Isla
The mean wind speed varies between 2 m/s (4 knots) and 4 m/s (8 knots) throughout the year. It is lowest in February, August and September and highest during January, March, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Isla
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: June, July, August and September
- Best for swimming: August, with water temperatures around 20°C (68°F).
- Seasonal pattern: Warm summers and mild winters
Frequently asked questions about the climate in Isla
What is the best time to visit Isla?
June, July, August and September typically offer the most optimal weather in Isla. In contrast, January tends to have less optimal conditions. Isla has warm summers and mild winters.
What temperatures can I expect in Isla?
Daytime highs range from 13°C (55°F) in January to 24°C (75°F) in August. Nighttime lows range from 8°C (46°F) to 18°C (64°F).
How much rain does Isla get?
Annual rainfall is around 1163 mm (46 in). November is the wettest month with 148 mm (5.8 in), while July is the driest with 57 mm (2.2 in).
How sunny is Isla?
Isla receives around 1,912 hours of sunshine per year. July is the sunniest month with 226 hours, while December is the cloudiest with just 88 hours.
Isla 3-Day Forecast
Isla on the map
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Popular this month
Where to go in August - average daytime high across popular destinations.
Seville
36°C (97°F) Madrid34°C (93°F) Valencia31°C (88°F) Málaga29°C (84°F) Benidorm29°C (84°F) Calpe
30°C (86°F) Marbella28°C (82°F) Barcelona28°C (82°F) 
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