San Juan 天氣 預報
San Juan weather: 27°C, 晴朗. 逐小時 forecast, 14-day outlook, UV, air quality and the best time至visit.
Will it rain in San Juan?
Yes - rain is likely in San Juan today.
A 73% chance means rain is expected over most of the area. Plan indoor alternatives.
Over the next 7 days, about 23 mm of precipitation is forecast,，天氣為the wettest days falling on 週三, 週四, 週五, 週六, 週日, 週一 and 週二.
雨fall over the next 7 days is close至normal for 十月 (23 mm against a typical 29 mm).
16-day forecast for San Juan
最高 / 最低; 降雨; UV
| 日期 | 天氣狀況 | 最高 / 最低 | 降雨 | 風 | UV |
|---|---|---|---|---|---|
| 週三, 十月 28 | 🌦️ Light showers | 31° / 26° | 73% · 5 mm | 14 km/h | 7 |
| 週四, 十月 29 | 🌦️ 毛毛雨 | 31° / 26° | 57% · 2 mm | 15 km/h | 7 |
| 週五, 十月 30 | 🌦️ Light drizzle | 30° / 25° | 66% · 1 mm | 24 km/h | 7 |
| 週六, 十月 31 | ⛈️ 雷雨 | 29° / 25° | 70% · 6 mm | 19 km/h | 7 |
| 週日, 十一月 1 | ⛈️ 雷雨 | 29° / 25° | 67% · 5 mm | 16 km/h | 7 |
| 週一, 十一月 2 | ⛈️ 雷雨 | 30° / 25° | 76% · 2 mm | 20 km/h | 1 |
| 週二, 十一月 3 | 🌦️ 毛毛雨 | 31° / 24° | 84% · 2 mm | 22 km/h | 7 |
| 週三, 十一月 4 | ⛈️ 雷雨 | 29° / 24° | 91% · 7 mm | 10 km/h | 7 |
| 週四, 十一月 5 | 🌦️ Light showers | 28° / 24° | 84% · 13 mm | 11 km/h | 7 |
| 週五, 十一月 6 | 🌦️ Light showers | 28° / 24° | 90% · 16 mm | 7 km/h | 7 |
| 週六, 十一月 7 | ⛈️ 雷雨 | 28° / 24° | 79% · 14 mm | 6 km/h | 5 |
| 週日, 十一月 8 | 🌦️ 毛毛雨 | 28° / 24° | 85% · 5 mm | 6 km/h | 7 |
| 週一, 十一月 9 | 🌦️ Light drizzle | 29° / 24° | 86% · 1 mm | 16 km/h | 7 |
| 週二, 十一月 10 | 🌥️ 霧 | 29° / 24° | 83% | 24 km/h | 7 |
| 週三, 十一月 11 | 🌦️ Light drizzle | 29° / 24° | 28% · 2 mm | 20 km/h | 7 |
| 週四, 十一月 12 | ☁️ 陰天 | 31° / 23° | 35% | 16 km/h | 6 |
What this means for San Juan
Today is about average for 十月. The forecast high of 31°C is in line，天氣為the 30°C typical for this month.
A 73% 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 六月至八月.
The gap between the warmest and coldest month averages 3°C - an unusually even climate through the year.
What至pack, what至skip
- Lightweight, light-coloured clothing and a refillable water bottle
- 週日glasses, 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 八月, 十月 and 十一月 - historically the least comfortable months here.
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San Juan weather - more answers
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Frequently asked questions
Where is San Juan?
San Juan is a city in 波多黎各. Its coordinates are 18.4655, -66.1057. It lies in 北美洲.
What is the weather like in San Juan現在?
It is currently 27°C (80°F)，天氣為晴朗. 濕度 is 80% and wind is 8 km/h.
When is the best time至visit San Juan?
一月, 三月, 五月, 六月, 七月, 九月 and 十二月 offer the most comfortable conditions in San Juan, which has a temperate climate. 八月, 十月 and 十一月 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 9:21 AM.
How many people live in San Juan?
San Juan has a population of approximately 340.000.
What are the top things至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. |
|---|---|
| 預報 and observations | Open-Meteo (ECMWF and national models). |
| 空氣品質 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 氣候 averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National 天氣 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 十月 28, 2026 at 9:21 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
