San Juan/Marin Intl
Weather station · 18.4°N 66.0°W · 3 m above sea level
ICAO TJSJWMO 78526Station data since 1956
Record high
35.0°C
in 2020
Record low
21.7°C
in 1956
Average high
31.8°C
all years on record
6.7°C short of the record for 23 September
Today’s high 28.3°C against 35.0°C in 2020. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
36.7°C
- Date
- Friday, 9 October 1981
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- San Juan/Marin Intl, Puerto Rico
- Position
- 18.43°N 66.01°W · 3 m
Highest highest in available records since 1956. Source: NOAA GHCN-Daily.
All-time record low
15.6°C
- Date
- Sunday, 3 March 1957
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- San Juan/Marin Intl, Puerto Rico
- Position
- 18.43°N 66.01°W · 3 m
Highest and lowest lowest in available records since 1956. Source: NOAA GHCN-Daily.
Where San Juan/Marin Intl is
18.43°N 66.01°W
Every year on record
1956 to 2026
Annual average · °C
Trend over 70 years with data: +0.12 °C per decade
Source: NOAA GHCN-Daily. Years the station did not cover are left as gaps, never joined across. The dashed line is a least squares trend through the years that have data.
Records by month
Jan
33.3°
16.1°
Feb
35.6°
16.7°
Mar
35.6°
15.6°
Apr
36.1°
17.8°
May
35.6°
18.9°
Jun
36.1°
20.6°
Jul
35.0°
20.6°
Aug
36.1°
21.1°
Sep
36.1°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 28.3°C | 00:56 UTC | 26.1°C | 06:56 UTC |
| 2026-09-22 | 30.6°C | 14:56 UTC | 26.7°C | 16:56 UTC |
Nearby stations
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1956 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |
