Current sea water temperature:
+81.7°F
| Minimum sea water temperature in December: | 83.3°F |
| Maximum sea water temperature in December: | 75.9°F |
| Average sea water temperature in December: | 79.5°F |
| more information | |
14 days
forecast
forecast
| San Juan del Sur |
monthly
weather
weather
| San Juan del Sur |
Sea water temperature for the last 10 days:
| December 16 | 81.7°F | December 11 | 83.1°F |
| December 15 | 81.7°F | December 10 | 83.1°F |
| December 14 | 82.0°F | December 9 | 81.9°F |
| December 13 | 82.0°F | December 8 | 81.5°F |
| December 12 | 82.6°F | December 7 | 80.1°F |
Monthly sea water temperature, °F
When is the warmest sea in San Juan del Sur?
Based on the data about daily sea water temperature for the last three years the warmest sea in San Juan del Sur was noticed in September, October and June.
Monthly Sea Temperatures in San Juan del Sur, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 83.7°F. The highest and lowest sea temperatures during the month were 84.9°F and 82.8°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 84.3°F. The highest and lowest sea temperatures during the month were 85.1°F and 83.7°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 83.5°F. The highest and lowest sea temperatures during the month were 84.2°F and 82.6°F.
current
weather
weather
| San Juan del Sur |
weather in
December
December
| San Juan del Sur |
Best time for vacation in San Juan del Sur
San Juan del Sur on a weather map
Places in Nicaragua:
Name
°F
24 Hours Forecast
San Juan del Sur
Local time: 14:14
December 16, tuesday
1500

82°F
W
20 mph
20 mph
1800

79°F
W
20 mph
20 mph
2100

79°F
SW
19 mph
19 mph
December 17, wednesday
0000

77°F
SW
19 mph
19 mph
0300

77°F
SW
19 mph
19 mph
0600

75°F
SW
19 mph
19 mph
0900

77°F
W
21 mph
21 mph
1200

81°F
W
18 mph
18 mph



























