San Juan Vejr Prognose
San Juan weather: 27°C, overskyet. Hver time forecast, 14-day outlook, UV, air quality and the best time og visit.
San Juan weather in oktober
Vejr map for San Juan
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Klima in San Juan month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Måned | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januar | 27° | 24° | 57 mm | ★★★★☆ |
| februar | 27° | 23° | 118 mm | ★★★★☆ |
| marts | 27° | 23° | 77 mm | ★★★★☆ |
| april | 28° | 24° | 123 mm | ★★★★☆ |
| maj | 29° | 25° | 87 mm | ★★★★☆ |
| juni | 30° | 26° | 62 mm | ★★★★☆ |
| juli | 30° | 26° | 62 mm | ★★★★☆ |
| august | 30° | 26° | 118 mm | ★★★★☆ |
| september | 30° | 26° | 79 mm | ★★★★☆ |
| oktober | 30° | 26° | 126 mm | ★★★☆☆ |
| november | 29° | 25° | 134 mm | ★★★☆☆ |
| december | 28° | 24° | 87 mm | ★★★★☆ |
Klima type: Temperate. Kilde: Open-Meteo archive (ERA5).
Bedste rejsetid San Juan
Go in januar, marts, maj, juni, juli, september and december. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: august, oktober and november - expect the least comfortable mix of heat, cold or rain.
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.
How San Juan compares med nearby places
Annual averages, and the difference against San Juan.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Virgin Islands National Park | 144 km | 25°C | 1°C cooler | 1021 mm |
| Dominican Republic | 403 km | 26°C | 1°C cooler | 1435 mm |
Se prognosen for San Juan efter tidsinterval
San Juan weather - more answers
Explore San Juan
Every topic we hold for this place, and the same topic for the places around it.
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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 (80°F) med overskyet. Luftfugtighed is 87% and wind is 10 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 3:05 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 3:05 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
