San Juan Vejr Prognose
San Juan weather: 27°C, mest klart. Hver time forecast, 14-day outlook, UV, air quality and the best time og visit.
14-day forecast for San Juan
Maks. / Min.; Nedbør; UV
| Dag | Forhold | Maks. / Min. | Nedbør | Vind | UV |
|---|---|---|---|---|---|
| man, okt 26 | 🌧️ Heavy drizzle | 32° / 27° | 91% · 3 mm | 18 km/h | 7 |
| tir, okt 27 | 🌦️ Light showers | 31° / 26° | 80% · 4 mm | 19 km/h | 8 |
| ons, okt 28 | 🌦️ Støvregn | 31° / 25° | 55% · 1 mm | 16 km/h | 7 |
| tor, okt 29 | 🌦️ Støvregn | 31° / 26° | 57% · 2 mm | 16 km/h | 7 |
| fre, okt 30 | 🌦️ Light drizzle | 30° / 25° | 60% · 1 mm | 23 km/h | 7 |
| lør, okt 31 | 🌦️ Light drizzle | 29° / 26° | 75% · 0 mm | 22 km/h | 7 |
| søn, nov 1 | 🌦️ Light drizzle | 29° / 25° | 75% · 1 mm | 21 km/h | 5 |
| man, nov 2 | 🌦️ Light drizzle | 30° / 25° | 84% · 1 mm | 19 km/h | 3 |
| tir, nov 3 | ⛈️ Tordenvejr | 30° / 24° | 80% · 7 mm | 10 km/h | 6 |
| ons, nov 4 | 🌦️ Light showers | 28° / 24° | 88% · 7 mm | 7 km/h | 8 |
| tor, nov 5 | 🌦️ Light drizzle | 28° / 24° | 82% · 2 mm | 11 km/h | 6 |
| fre, nov 6 | 🌦️ Light drizzle | 29° / 24° | 85% · 3 mm | 11 km/h | 7 |
| lør, nov 7 | 🌦️ Light drizzle | 29° / 24° | 72% · 1 mm | 19 km/h | 7 |
| søn, nov 8 | 🌦️ Light drizzle | 29° / 25° | 72% · 1 mm | 23 km/h | 7 |
The two-week trend
Cooling. The second half of the window averages 2°C cooler than the days immediately ahead.
The window averages 30°C against a oktober normal of 30°C - right on average.
The next 7 days look unusually dry - roughly 37% of a normal oktober week (11 mm against 29 mm).
What this means for San Juan
Today is slightly warmer than average for oktober. The forecast high of 32°C is 2.1°C above the 30°C typical for this month.
A 91% chance means rain is expected over most of the area. Plan indoor alternatives.
Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in juni og august.
The gap between the warmest and coldest month averages 3°C - an unusually even climate through the year.
What og pack, what og skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sønglasses, a brimmed hat and SPF 30+
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid august, oktober and november - historically the least comfortable months here.
Se prognosen for San Juan efter tidsinterval
San Juan weather - more answers
Explore San Juan
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Frequently asked questions
Where is San Juan?
San Juan is a city in Puerto Rico. Its coordinates are 18.4655, -66.1057. It lies in Nordamerika.
What is the weather like in San Juan lige nu?
It is currently 27°C (81°F) med mest klart. Luftfugtighed is 83% and wind is 15 km/h.
When is the best time og visit San Juan?
januar, marts, maj, juni, juli, september and december offer the most comfortable conditions in San Juan, which has a temperate climate. august, oktober and november are usually the hardest months for outdoor plans.
What time zone is San Juan in?
San Juan observes America/Puerto_Rico (UTC-04:00). The local time is 12:54 AM.
How many people live in San Juan?
San Juan has a population of approximately 340.000.
What are the top things og do in San Juan?
Popular options include Virgin Islands National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-world) - coordinates, hierarchy and facts. |
|---|---|
| Prognose and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Vejr Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated oktober 27, 2026 at 12:54 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
