Measurements:
°C
°F
Islantilla
82°F
N 14 mph
Feels like: 84°F
Precip: 4%
World Resorts Spain Islantilla Weather

Islantilla Sea Water Temperature

Current Sea Water Temperature:
+75.4°F
Maximum Sea Water Temperature in August: 81.6°F
Minimum Sea Water Temperature in August: 66.4°F
Average water temperature in August: 74.4°F

Sea Water Temperature for the Last 10 Days:

August 19 75.4°F August 14 75.6°F
August 18 75.8°F August 13 74.6°F
August 17 76.0°F August 12 72.4°F
August 16 75.2°F August 11 71.8°F
August 15 76.2°F August 10 72.0°F

When is the Warmest Sea for Islantilla?

According to our data for the last three years for Islantilla the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Islantilla was 73.5°F. The maximum and minimum values were 70.4°F and 76.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Islantilla was 74.9°F. The maximum and minimum values were 67.4°F and 82.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Islantilla was 68.8°F. The maximum and minimum values were 64.8°F and 73.8°F respectively.

Best Time to Visit Islantilla
The most sunny months:
August 30 days
July 30 days
June 25 days
The most warm months:
July 91.1 °F
August 90.7 °F
June 84.2 °F
Warmest sea temperature:
August 74.6 °F
July 74.0 °F
September 71.9 °F
The most cold months:
January 60.0 °F
December 61.9 °F
February 63.5 °F
The most rainy months:
December 2 days
November 2 days
March 1 day
The most windy months:
March 9 mph
June 9 mph
January 9 mph

Islantilla on the Weather Map

24 Hours Weather Forecast
Islantilla
Local time: 16:53
19 aug, wednesday
1800 82°F
N
14 mph
2100 74°F
NE
8 mph
20 aug, thursday
0000 70°F
NE
4 mph
0300 68°F
E
2 mph
0600 68°F
N
2 mph
0900 74°F
N
4 mph
1200 84°F
N
12 mph
1500 86°F
N
14 mph