Weather in San Juan — today
Now in San Juan
☁️
+29°
Overcast
Feels like +31° · humidity 71%
Today 15.6: +30° / +27°
🕐 15:25
Wind
28 km/h
UV index
7
Air (AQI)
20 · Excellent
Precipitation
2%
Humidity
71%
Pressure
1017 hPa
Sunrise / sunset
05:48 / 19:01
Sea temperature
🌊 +28°
👕 What to wear today
Warm — a T-shirt and light trousers or shorts.
💨 WindyFeels warmer by 2°
Weather for an activity:
Detailed weather information for San Juan
Today, 15 June, Monday, in San Juan (Puerto Rico): partly cloudy, hot. During the day the air will warm up to +30°, at night around +27°. UV is high (index 7) — sunscreen will come in handy in the sun. Wind up to 28 km/h. No precipitation expected, you won't need an umbrella. Light summer clothing will do — a T-shirt and shorts or light trousers. The sea has warmed up to +28° — great for swimming. The sun will rise at 05:48 and set at 19:01 — daylight lasts 13 hours.Hourly weather in San Juan
💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).
Weather in San Juan for 14 days
Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).
▶
Today 15.6
☁️
💧 2%
+27° +30°
Morning
☁️
+28°
Day
☁️
+30°
Evening
🌇
+29°
Night
🌙
+27°
▶
Tomorrow 16.6
🌦️
💧 46%
+26° +28°
Morning
🌤️
+27°
Day
🌦️
+28°
Evening
🌇
+28°
Night
🌙
+26°
▶
Wed 17.6
☁️
💧 46%
+26° +29°
Morning
☁️
+27°
Day
☁️
+29°
Evening
🌇
+28°
Night
🌙
+26°
▶
Thu 18.6
⛈️
💧 90%
+26° +28°
Morning
⛈️
+27°
Day
⛈️
+28°
Evening
🌇
+28°
Night
🌙
+26°
▶
Fri 19.6
⛈️
💧 66%
+26° +29°
Morning
⛈️
+27°
Day
⛈️
+29°
Evening
🌇
+28°
Night
🌙
+26°
▶
Sat 20.6
⛈️
💧 14%
+26° +28°
Morning
⛈️
+27°
Day
⛈️
+28°
Evening
🌇
+28°
Night
🌙
+26°
▶
Sun 21.6
⛈️
💧 100%
+27° +28°
Morning
⛈️
+27°
Day
⛈️
+28°
Evening
🌇
+28°
Night
🌙
+27°
▶
Mon 22.6
⛈️
💧 53%
+27° +29°
Morning
⛈️
+28°
Day
⛈️
+29°
Evening
🌇
+29°
Night
🌙
+27°
▶
Tue 23.6
🌦️
💧 24%
+26° +28°
Morning
🌦️
+27°
Day
🌦️
+28°
Evening
🌇
+28°
Night
🌙
+26°
▶
Wed 24.6
🌦️
💧 64%
+26° +28°
Morning
🌦️
+27°
Day
🌦️
+28°
Evening
🌇
+28°
Night
🌙
+26°
▶
Thu 25.6
⛈️
💧 41%
+27° +28°
Morning
⛈️
+27°
Day
⛈️
+28°
Evening
🌇
+28°
Night
🌙
+27°
▶
Fri 26.6
⛅
💧 20%
+27° +28°
Morning
⛅
+27°
Day
⛅
+28°
Evening
🌇
+28°
Night
🌙
+27°
▶
Sat 27.6
🌤️
💧 30%
+26° +28°
Morning
🌤️
+27°
Day
🌤️
+28°
Evening
🌇
+28°
Night
🌙
+26°
▶
Sun 28.6
🌤️
💧 49%
+26° +28°
Morning
🌤️
+27°
Day
🌤️
+28°
Evening
🌇
+28°
Night
🌙
+26°
🗺️ Precipitation radar
Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.
Rain intensity:lightmoderateheavy
🎯 What to do in this weather — indices of the day
Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.
🏖️ Beach
93 / 100
for sea and sun · Excellent
🏊 Swimming
86 / 100
water 28° · Excellent
🏃 Running
38 / 100
comfort for running · So-so
🧴 UV
63%
high · high
☂️ Rain
2%
unlikely · low
✨ Stars
87 / 100
evening visibility · Excellent
🧺 Laundry drying
65 / 100
will dry outside · Average
🚗 Car wash
93 / 100
no rain expected · Excellent
🌫️ Air quality
20
Excellent air
European AQI
PM2.5: 7PM10: 12O₃: 51NO₂: 0
The air is clean — you can walk and exercise outside.
🌅 Sun, moon and sea
Sunrise
05:48
Sunset
19:01
Golden hour
18:30
Daylight
13 h (+0 min vs yesterday)
Sea temperature
+28°
🌊 slight, waves 1.2 m.
San Juan climate by month
Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.
+28°
+21°
Jan
+28°
+21°
Feb
+29°
+21°
Mar
+30°
+22°
Apr
+30°
+23°
May
+31°
+24°
Jun
+31°
+25°
Jul
+31°
+25°
Aug
+31°
+24°
Sep
+30°
+24°
Oct
+29°
+23°
Nov
+28°
+22°
Dec
swipe sideways →
Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit
| Month | Day | Night | Sea | Precipitation | What to pack and what makes the month notable (events, nuances) |
|---|---|---|---|---|---|
| January | +28° | +21° | +27° | 43 mm | Gentle warmth — about +28° daytime, great walking weather. 😊 light summer clothing. Water at +27° — great for swimming. This is the coldest month of the year. |
| February | +28° | +21° | +27° | 31 mm | A comfortable month: +28° by day without exhausting heat. 😊 light summer clothing. Water at +27° — great for swimming. Weather-wise, one of the three best months to visit. |
| March | +29° | +21° | +27° | 41 mm | Warm and comfortable: +29° by day, +21° at night. 😊 light summer clothing. Water at +27° — great for swimming. |
| April | +30° | +22° | +27° | 73 mm | Gentle warmth — about +30° daytime, great walking weather. Frequent rain (73 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Water at +27° — great for swimming. |
| May | +30° | +23° | +28° | 108 mm | A comfortable month: +30° by day without exhausting heat. One of the wettest months (108 mm): downpours can derail plans. 😊 light summer clothing. Water at +28° — great for swimming. |
| June | +31° | +24° | +29° | 62 mm | Warm and comfortable: +31° by day, +24° at night. It's a rainy month (62 mm) — an umbrella is a must. 😊 light summer clothing. Water at +29° — great for swimming. The longest daylight hours of the year — more time for everything. |
| July | +31° | +25° | +29° | 68 mm | Gentle warmth — about +31° daytime, great walking weather. Frequent rain (68 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Water at +29° — great for swimming. |
| August | +31° | +25° | +30° | 82 mm | A comfortable month: +31° by day without exhausting heat. One of the wettest months (82 mm): downpours can derail plans. 😊 light summer clothing. The sea is +30° — like a warm bath. This is the hottest month of the year in San Juan. |
| September | +31° | +24° | +30° | 128 mm | Warm and comfortable: +31° by day, +24° at night. It's a rainy month (128 mm) — an umbrella is a must. 😊 light summer clothing. The sea is +30° — like a warm bath. Statistically the wettest month of the year. |
| October | +30° | +24° | +30° | 114 mm | Gentle warmth — about +30° daytime, great walking weather. Frequent rain (114 mm over the month) — keep indoor backup plans. 😊 light summer clothing. The sea is +30° — like a warm bath. The sea is at its warmest of the year this month. |
| November | +29° | +23° | +29° | 105 mm | A comfortable month: +29° by day without exhausting heat. One of the wettest months (105 mm): downpours can derail plans. 😊 light summer clothing. Water at +29° — great for swimming. |
| December | +28° | +22° | +28° | 48 mm | Warm and comfortable: +28° by day, +22° at night. 😊 light summer clothing. Water at +28° — great for swimming. The shortest daylight of the year — it gets dark early. |
When to visit San Juan
✅ Recommended time to visit
🌟 Best time: January, February, December
Daytime air+28…+28°
Sea temperature+27…+28°
Precipitationoften
Why: comfortable +28…+28° by day, little rain, warm sea (+27…28°).
⚠️ Doable, with caveats
🌤️ Shoulder season: March, April, June, July, August, November
Daytime air+29…+31°
Sea temperature+27…+30°
Precipitationoften
Why: noticeable rain risk (41–105 mm/month) — pack an umbrella and backup plans.
🔴 Not the best time
🌤️ Shoulder season: May, September, October
Daytime air+30…+31°
Sea temperature+28…+30°
Precipitationoften
Why: the rainy season (108–128 mm/month) — downpours almost daily.
Bottom line: the best time to visit San Juan is December – February, and the most comfortable months are January, February, December. The toughest months to visit are May, September, October: frequent rain.
🌡️ Today vs the climate normal
Today's high
+30°
Normal for June
+31°
Deviation
1° colder than normal
A year ago on this day
+29°
Record for this date
+35° (2023)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).
Weather archive for San Juan
📅 See what the weather was like on any day since 1940. For example: “what was the weather on March 2, 2021”.
Show the archive for the selected day →
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Weather in cities near San Juan
Frequently asked questions about the weather in San Juan
What is the weather in San Juan right now?＋
Overcast, +29°, feels like +31°.
Will it rain in San Juan today?＋
No: 2% chance, 0 mm.
When is the best time to visit San Juan?＋
Best time to visit — December – February.
Can you swim in San Juan in winter?＋
In winter the water is around +27° — great for swimming. In summer the sea warms up to +29°.
What time are sunrise and sunset in San Juan?＋
Sunrise 05:48, sunset 19:01.
Does it snow in San Juan in winter?＋
No, it practically never snows.
What is the climate in San Juan by month?＋
Summers up to +31° in August, winters around +21° in January; the wettest month is September.
How hot is it in San Juan in summer?＋
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.
Data: Open-Meteo (CC-BY 4.0), met.no, NWS · radar RainViewer · archive since 1940 · © wweather1 — traffic-adv.ae