Measurements:
°C
°F
Islantilla
60°F
SW 4 mph
Feels like: 60°F
Precip: 0%
World Resorts Spain Islantilla Weather

Islantilla Sea Water Temperature

Current Sea Water Temperature:
+64.2°F
Maximum Sea Water Temperature in April: 68.2°F
Minimum Sea Water Temperature in April: 59.4°F
Average water temperature in April: 63.8°F

Sea Water Temperature for the Last 10 Days:

April 19 64.2°F April 14 60.8°F
April 18 62.6°F April 13 62.6°F
April 17 62.4°F April 12 62.8°F
April 16 60.4°F April 11 63.6°F
April 15 61.2°F April 10 63.2°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Islantilla was 77.4°F. The maximum and minimum values were 70.4°F and 81.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Islantilla was 74.6°F. The maximum and minimum values were 64.4°F and 81.8°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:
July 31 days
August 30 days
June 25 days
The most warm months:
July 91.3 °F
August 90.7 °F
June 84.0 °F
Warmest sea temperature:
August 74.6 °F
July 73.8 °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
January 9 mph
June 9 mph

Islantilla on the Weather Map

24 Hours Weather Forecast
Islantilla
Local time: 05:32
20 apr, monday
0600 60°F
SW
4 mph
0900 66°F
SW
5 mph
1200 72°F
W
9 mph
1500 76°F
NW
9 mph
1800 74°F
N
6 mph
2100 66°F
NW
4 mph
21 apr, tuesday
0000 64°F
W
6 mph
0300 62°F
NW
5 mph