San Juan Ilmasto and Average Sää
Ilmasto of San Juan: average temperatures, rainfall and seasons month by month.
Ilmasto in San Juan month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Kuukausi | Avg high | Avg low | Sadefall | Rating |
|---|---|---|---|---|
| tammikuu | 27° | 24° | 57 mm | ★★★★☆ |
| helmikuu | 27° | 23° | 118 mm | ★★★★☆ |
| maaliskuu | 27° | 23° | 77 mm | ★★★★☆ |
| huhtikuu | 28° | 24° | 123 mm | ★★★★☆ |
| tou | 29° | 25° | 87 mm | ★★★★☆ |
| kesäkuu | 30° | 26° | 62 mm | ★★★★☆ |
| heinäkuu | 30° | 26° | 62 mm | ★★★★☆ |
| elokuu | 30° | 26° | 118 mm | ★★★★☆ |
| syyskuu | 30° | 26° | 100 mm | ★★★★☆ |
| lokakuu | 30° | 26° | 89 mm | ★★★★☆ |
| marraskuu | 29° | 25° | 134 mm | ★★★☆☆ |
| joulukuu | 28° | 24° | 87 mm | ★★★★☆ |
Ilmasto type: Temperate. Lähde: Open-Meteo archive (ERA5).
Recent extremes in San Juan
Korkeaest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How San Juan compares ja 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 | 981 mm |
| Dominican Republic | 403 km | 26°C | 1°C cooler | 1429 mm |
Paras aika vierailla San Juan
Go in tammikuu, maaliskuu, tou, kesäkuu, heinäkuu and joulukuu. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: helmikuu, elokuu and marraskuu - expect the least comfortable mix of heat, cold or rain.
What this means for San Juan
Today is about average for lokakuu. The forecast high of 31°C is in line ja the 30°C typical for this month.
A 78% 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 kesäkuu ja elokuu.
The gap between the warmest and coldest month averages 3°C - an unusually even climate through the year.
What ja pack, what ja skip
- Lightweight, light-coloured clothing and a refillable water bottle
- suglasses, 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 helmikuu, elokuu and marraskuu - historically the least comfortable months here.
Yhteenveto
San Juan is a city in Puerto Rico. San Juan is known for Old San Juan forts and beaches. Väkiluku on noin 340.000.
Tällä hetkellä lämpötila on 27°C (80°F) in San Juan ja selkeä. Tuntuu kuin 32°C. Tänään lämpötila vaihtelee 26°C ja 31°C. laeen todennäköisyys on 78%. Sightseeing conditions score 7.7/10 - hyvät olosuhteet.
Paras aika matkustaa kohteeseen San Juan is tammikuu, maaliskuu, tou, kesäkuu, heinäkuu and joulukuu. Ilmasto on temperate. helmikuu, elokuu and marraskuu tend ja be the least comfortable months. lokakuu is the warmest month ja average highs near 30°C, while helmikuu is the coldest ja lows near 23°C.
Nearby highlights include Virgin Islands National Park.
Yksinkertaisesti sanottuna. Today is about average for lokakuu. The forecast high of 31°C is in line ja the 30°C typical for this month. The best window ja be outside is roughly 7 AM ja 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in San Juan today at 8.4/10. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about San Juan
| Tyyppi | City |
|---|---|
| Maa | Puerto Rico |
| Maanosa | Pohjois-Amerikka |
| Koordinaatit | 18°27′55.8″N 66°6′20.5″W (18.4655, -66.1057) |
| Väkiluku | 340.000 |
| Known for | Old San Juan forts and beaches |
| Paikallinen aika | 11:20 PM (UTC-04:00) |
| Best months | tammikuu, maaliskuu, tou, kesäkuu, heinäkuu and joulukuu |
| Ilmasto | Temperate |
Sää map for San Juan
Animated model layers. Pick a layer ja load it.
Animated layers by Tuuliy. For pin-level detail and nearby places, see the interactive map below.
Explore San Juan
Every topic we hold for this place, and the same topic for the places around it.
Ilmasto for related places
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 Pohjois-Amerikka.
What is the weather like in San Juan nyt?
It is currently 27°C (80°F) ja selkeä. Kosteus is 88% and wind is 6 km/h.
When is the best time ja visit San Juan?
tammikuu, maaliskuu, tou, kesäkuu, heinäkuu and joulukuu offer the most comfortable conditions in San Juan, which has a temperate climate. helmikuu, elokuu and marraskuu 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 11:20 PM.
How many people live in San Juan?
San Juan has a population of approximately 340.000.
What are the top things ja 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. |
|---|---|
| Ennuste and observations | Open-Meteo (ECMWF and national models). |
| Ilmanlaatu and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Ilmasto averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Sää 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 lokakuu 29, 2026 at 11:20 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
