17.09
thu
thu
Day
86°F
W 19 mph
Precip.
7%
7%
Night
81°F
W 19 mph
Precip.
42%
42%
18.09
fri
fri
Day
84°F
W 15 mph
Precip.
10%
10%
Night
82°F
W 14 mph
Precip.
8%
8%
19.09
sat
sat
Day
82°F
W 11 mph
Precip.
6%
6%
Night
81°F
W 14 mph
Precip.
71%
71%
20.09
sun
sun
Day
82°F
W 6 mph
Precip.
9%
9%
Night
81°F
W 10 mph
Precip.
72%
72%
21.09
mon
mon
Day
79°F
E 6 mph
Precip.
67%
67%
Night
77°F
NE 6 mph
Precip.
23%
23%
22.09
tue
tue
Day
84°F
NE 12 mph
Precip.
36%
36%
Night
77°F
NE 13 mph
Precip.
49%
49%
23.09
wed
wed
Day
84°F
NE 13 mph
Precip.
47%
47%
Night
79°F
NE 10 mph
Precip.
52%
52%
sea water
temperature
temperature
| San Juan del Sur |
monthly
weather
weather
| San Juan del Sur |
current
weather
weather
| San Juan del Sur |
14 days
forecast
forecast
| San Juan del Sur |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 84.4°F. The highest and lowest sea temperatures during the month were 84.9°F and 83.5°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.
Air temperature in San Juan del Sur, °F
Precipitation total in San Juan del Sur, in.
* Charts above show average data for the last 3 years.
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: 08:51
September 17, thursday
0900
82°F
SW
25 mph
25 mph
1200
86°F
W
19 mph
19 mph
1500
86°F
W
17 mph
17 mph
1800
82°F
W
17 mph
17 mph
2100
81°F
SW
18 mph
18 mph
September 18, friday
0000
81°F
W
19 mph
19 mph
0300
79°F
SW
18 mph
18 mph
0600
79°F
W
17 mph
17 mph
