Measurements:
°C
°F
Islantilla
76°F
SE 17 mph
Feels like: 80°F
Precip: 4%
World Resorts Spain Islantilla Weather

Islantilla Sea Water Temperature

Current Sea Water Temperature:
+77.4°F
Maximum Sea Water Temperature in September: 77.4°F
Minimum Sea Water Temperature in September: 63.0°F
Average water temperature in September: 72.0°F

Sea Water Temperature for the Last 10 Days:

September 08 77.4°F September 03 70.8°F
September 07 76.8°F September 02 68.0°F
September 06 74.6°F September 01 68.8°F
September 05 73.0°F August 31 69.0°F
September 04 72.2°F August 30 68.8°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 72.8°F. The maximum and minimum values were 68.8°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 90.4 °F
June 84.2 °F
Warmest sea temperature:
August 74.3 °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: 00:12
09 sep, wednesday
0300 72°F
SE
18 mph
0600 72°F
SE
15 mph
0900 76°F
SE
15 mph
1200 86°F
SE
13 mph
1500 94°F
SE
11 mph
1800 96°F
SE
15 mph
2100 78°F
SE
20 mph
10 sep, thursday
0000 72°F
SE
15 mph