Measurements:
°C
°F
San Juan del Sur
78°F
SW 14 mph
Feels like: 82°F
Precip: 0%
World Resorts Nicaragua San Juan del Sur Weather

San Juan del Sur Sea Water Temperature

Current Sea Water Temperature:
+83.0°F
Maximum Sea Water Temperature in December: 87.0°F
Minimum Sea Water Temperature in December: 78.8°F
Average water temperature in December: 82.6°F

Sea Water Temperature for the Last 10 Days:

December 05 83.0°F November 30 81.8°F
December 04 82.6°F November 29 83.0°F
December 03 83.0°F November 28 82.8°F
December 02 82.4°F November 27 82.8°F
December 01 82.4°F November 26 83.4°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 13 days
March 13 days
April 9 days
The most warm months:
April 93.1 °F
May 91.8 °F
March 91.5 °F
Warmest sea temperature:
September 88.1 °F
October 87.9 °F
May 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 18 mph
March 17 mph

San Juan del Sur on the Weather Map

Nicaragua Resorts:
NAME
Apoyo Lake +70
Ciudad Sandino +70
Corn Islands +84
El Transito +80
Granada +74
Isla de Ometepe +78
Las Salinas +76
Leon +74
Managua +70
Masachapa +80
Masaya +72
Pochomil +80
San Diego +80
San Juan del Sur +78
Somoto +60
24 Hours Weather Forecast
San Juan del Sur
Local time: 01:59
05 dec, friday
0300 78°F
SW
14 mph
0600 78°F
SW
16 mph
0900 82°F
W
17 mph
1200 84°F
W
16 mph
1500 86°F
W
12 mph
1800 82°F
SW
13 mph
2100 82°F
SW
15 mph
06 dec, saturday
0000 80°F
W
14 mph