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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 28 °C
NE 23km/h
1m
Tonight
Low: 28 °C
ENE 16km/h
1m
Wednesday
High: 29 °C
⇑ESE 29km/h
1m
Wednesday Night
Low: 27 °C
ESE 18km/h
1m
Thursday
High: 29 °C
⇑E 29km/h
1m
Thursday Night
Low: 27 °C
ESE 16km/h
1m
Friday
High: 29 °C
ENE 27km/h
1m
Friday Night
Low: 27 °C
E 18km/h
1m
Saturday
High: 29 °C
E 29km/h
1m

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:55 pm EDT Jul 21, 2026
Forecast Valid: 1pm EDT Jul 21, 2026-6pm EDT Jul 27, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

NE wind around 23 km/h, with gusts as high as 32 km/h. Scattered showers. Seas around 1 m.

Tonight

ENE wind 11 to 16 km/h becoming ESE after midnight. Scattered showers, mainly before midnight. Seas around 1 m.

Wednesday

ESE wind 11 to 16 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 40 km/h. Scattered showers, mainly between noon and 3pm. Seas around 1 m.

Wednesday Night

ESE wind 13 to 18 km/h. Isolated showers. Seas around 1 m.

Thursday

E wind 14 to 19 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 40 km/h. Isolated showers after noon. Seas around 1 m.

Thursday Night

ESE wind 11 to 16 km/h. Isolated showers. Seas around 1 m.

Friday

ENE wind 18 to 27 km/h, with gusts as high as 39 km/h. Sunny. Seas around 1 m.

Friday Night

E wind 16 to 18 km/h. Mostly clear. Seas around 1 m.

Saturday

E wind 21 to 29 km/h, with gusts as high as 40 km/h. Mostly sunny. Seas around 1 m.

Winds and seas higher in and near thunderstorms.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.