Measurements:
°C
°F
San Juan del Sur
84°F
W 15 mph
Feels like: 90°F
Precip: 81%
World Resorts Nicaragua San Juan del Sur Weather

San Juan del Sur Sea Water Temperature

Current Sea Water Temperature:
+88.4°F
Maximum Sea Water Temperature in May: 90.2°F
Minimum Sea Water Temperature in May: 82.8°F
Average water temperature in May: 87.5°F

Sea Water Temperature for the Last 10 Days:

May 30 88.4°F May 25 87.0°F
May 29 88.2°F May 24 87.4°F
May 28 87.6°F May 23 86.2°F
May 27 87.6°F May 22 85.8°F
May 26 87.4°F May 21 85.2°F

When is the Warmest Sea for San Juan del Sur?

According to our data for the last three years for San Juan del Sur the highest average sea water temperature was in September, October and June.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for San Juan del Sur was 87.5°F. The maximum and minimum values were 86.4°F and 88.8°F respectively.

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for San Juan del Sur was 88.1°F. The maximum and minimum values were 87.4°F and 89.0°F respectively.

Sea Water Temperature in June

Select Year: 2025 2024 2023

The average sea surface temperature in June 2025 for San Juan del Sur was 87.2°F. The maximum and minimum values were 86.2°F and 88.0°F respectively.

Best Time to Visit San Juan del Sur
The most sunny months:
February 14 days
March 13 days
April 10 days
The most warm months:
April 93.0 °F
May 92.0 °F
March 91.3 °F
Warmest sea temperature:
September 88.1 °F
October 87.9 °F
June 87.7 °F
The most cold months:
November 84.8 °F
December 85.7 °F
October 86.2 °F
The most rainy months:
June 12 days
October 9 days
September 8 days
The most windy months:
February 19 mph
January 19 mph
March 17 mph

San Juan del Sur on the Weather Map

Nicaragua Resorts:
NAME
Apoyo Lake +80
Ciudad Sandino +80
Corn Islands +84
El Transito +82
Granada +80
Isla de Ometepe +84
Las Salinas +82
Leon +80
Managua +80
Masachapa +82
Masaya +76
Pochomil +82
San Diego +82
San Juan del Sur +84
Tola +84
24 Hours Weather Forecast
San Juan del Sur
Local time: 02:16
30 may, saturday
0300 84°F
W
15 mph
0600 84°F
W
14 mph
0900 88°F
W
15 mph
1200 90°F
W
11 mph
1500 92°F
W
8 mph
1800 88°F
W
6 mph
2100 86°F
NW
6 mph
31 may, sunday
0000 86°F
W
2 mph