San Juan Veður Spá
San Juan weather: 27°C, skýjað að hluta. Á klukkustund forecast, 14-day outlook, UV, air quality and the best time til visit.
San Juan weather in desember
One of the best months til visit San Juan.
desember runs 1°C cooler than the annual average in San Juan.
Compare með nóvember.
Veður map for San Juan
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Animated layers by Vindury. For pin-level detail and nearby places, see the interactive map below.
Loftslag in San Juan month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Mánuður | Avg high | Avg low | Rigningfall | Rating |
|---|---|---|---|---|
| janúar | 27° | 24° | 57 mm | ★★★★☆ |
| febrúar | 27° | 23° | 118 mm | ★★★★☆ |
| mars | 27° | 23° | 77 mm | ★★★★☆ |
| apríl | 28° | 24° | 123 mm | ★★★★☆ |
| maí | 29° | 25° | 87 mm | ★★★★☆ |
| júní | 30° | 26° | 62 mm | ★★★★☆ |
| júlí | 30° | 26° | 63 mm | ★★★★☆ |
| ágúst | 30° | 26° | 92 mm | ★★★★☆ |
| september | 30° | 26° | 101 mm | ★★★★☆ |
| október | 30° | 26° | 126 mm | ★★★☆☆ |
| nóvember | 29° | 25° | 134 mm | ★★★☆☆ |
| desember | 28° | 24° | 87 mm | ★★★★☆ |
Loftslag type: Temperate. Heimild: Open-Meteo archive (ERA5).
Best time til visit San Juan
Go in janúar, mars, maí, júní, júlí, ágúst and desember. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: febrúar, október and nóvember - expect the least comfortable mix of heat, cold or rain.
What til pack, what til skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sun.glasses, a brimmed hat and SPF 30+
- A packable rain shell - 6 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid febrúar, október and nóvember - historically the least comfortable months here.
How San Juan compares með nearby places
Annual averages, and the difference against San Juan.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Virgin Islands National Park | 144 km | 26°C | 1°C cooler | 999 mm |
| Dominican Republic | 403 km | 26°C | 1°C cooler | 1475 mm |
Sjá spá fyrir San Juan eftir tímabili
San Juan weather - more answers
Explore San Juan
Every topic we hold for this place, and the same topic for the places around it.
Veður for related places
Frequently asked questions
Where is San Juan?
San Juan is a city in Púertó Ríkó. Its coordinates are 18.4655, -66.1057. It lies in Norður-Ameríka.
What is the weather like in San Juan núna?
It is currently 27°C (80°F) með skýjað að hluta. Raki is 87% and wind is 15 km/h.
When is the best time til visit San Juan?
janúar, mars, maí, júní, júlí, ágúst and desember offer the most comfortable conditions in San Juan, which has a temperate climate. febrúar, október and nóvember 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 8:21 AM.
How many people live in San Juan?
San Juan has a population of approximately 340.000.
What are the top things til 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. |
|---|---|
| Spá and observations | Open-Meteo (ECMWF and national models). |
| Loftgæði and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Loftslag averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Veður 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 september 17, 2026 at 8:21 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
