San Juan weather in November
In November, San Juan has daytime highs averaging 29 °C, nights around 23 °C, with 18 wet days, and a sea temperature of 28 °C. Figures are 1991–2020 climate normals.
- 28.9°C Average high
- 23.1°C Average low
- 18days Wet days
- 105mm Rainfall
- 28.3°C Sea temperature
- 11h Daylight
Daily temperatures through November
How November develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 November | 29.3 °C | 23.5 °C | 66 % |
| 11–20 November | 28.9 °C | 23.2 °C | 59 % |
| 21–30 November | 28.5 °C | 22.7 °C | 52 % |
- Rain is most likely over days 1–10 of November (66 % of days) and least likely over days 21–30 (52 %).
What to expect
| Measure | Typical November | Share of the month |
|---|---|---|
| Days above 25 °C | 30 of 30 | 100 % |
| Days above 30 °C | 5.0 of 30 | 17 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 18 of 30 | 59 % |
Conditions in November
| Measure | Average |
|---|---|
| Mean temperature | 25 °C |
| Record high (1991–2020) | 32 °C |
| Record low (1991–2020) | 20 °C |
| Relative humidity | 84 % |
| Wind speed | 17 km/h |
| Cloud cover | 52 % |
Where San Juan ranks in November
| Ranking | Position | Value |
|---|---|---|
| The warmest places in North America in November | 21stof 50 | 29 °C |
November compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 27.9 °C | 43 mm | 38 % |
| September | 31.1 °C | 128 mm | 63 % |
| October | 30.3 °C | 113 mm | 58 % |
| November | 28.9 °C | 105 mm | 52 % |
| December | 28.1 °C | 49 mm | 41 % |
See all twelve months for San Juan
- November is the 9th warmest month here.
- It is the 9th driest month of the year.
- It ranks 6th for least cloud cover.
- Days last about 11 hours from sunrise to sunset.
- It rains on 18 of 30 days — 59 % of the month.
- Nights are about 5.8 °C cooler than the middle of the day.
- The hottest November day on record since 1991 reached 32 °C, 3.5 °C above the usual daytime high.
- Beach score: 71 / 100 — see how this is calculated.
Nearby destinations in November
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| San Juan | 29 °C | 18 | 28 |
| Carolina | 29 °C | 21 | 28 |
| Charlotte Amalie | 27 °C | 16 | 28 |
| Road Town | 27 °C | 16 | 28 |
| La Romana | 29 °C | 12 | 28 |
| San Pedro de Macorís | 29 °C | 12 | 28 |
| Gustavia | 27 °C | 14 | 28 |
| Basseterre | 27 °C | 16 | 28 |
| Santo Domingo | 28 °C | 15 | 28 |
QuestionsNovember in San Juan, answered
How warm is San Juan in November?
Daily highs average 29 °C and nights fall to about 23 °C, a spread of 5.8 °C between afternoon and dawn. That makes November the 8th warmest month of the year here.
Does it rain much in San Juan in November?
November averages 105 mm of rain, spread over about 18 of the 30 days — 59 % of the month. Cloud cover averages 52 % of the sky.
Is the sea warm enough to swim in November?
The sea averages 28 °C off San Juan in November. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in November?
San Juan averages 11 hours between sunrise and sunset in November. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.