Measurements:
°C
°F
Islantilla
74°F
SE 7 mph
Feels like: 74°F
Precip: 1%
World Resorts Spain Islantilla Weather

Islantilla Sea Water Temperature

Current Sea Water Temperature:
+75.0°F
Maximum Sea Water Temperature in June: 79.0°F
Minimum Sea Water Temperature in June: 62.6°F
Average water temperature in June: 70.6°F

Sea Water Temperature for the Last 10 Days:

June 19 75.0°F June 14 71.8°F
June 18 75.6°F June 13 71.2°F
June 17 74.8°F June 12 70.4°F
June 16 73.6°F June 11 68.6°F
June 15 73.6°F June 10 67.2°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: 02:09
20 jun, saturday
0300 74°F
SE
7 mph
0600 70°F
S
7 mph
0900 82°F
S
8 mph
1200 90°F
NW
7 mph
1500 92°F
NE
11 mph
1800 90°F
NE
11 mph
2100 82°F
NE
9 mph
21 jun, sunday
0000 78°F
NE
4 mph