Live Weather & Forecast

Weather in San Germán

Puerto Rico, United States · Real-time conditions & 3-day outlook

Flag of United States
Patchy rain nearby
24°C
Feels like 26°C
76°F / Feels 79°F
Patchy rain nearby
San Germán, Puerto Rico
🌞 Daytime
Updated: 2026-04-18 08:45
💧
Humidity
89%
💨
Wind
11.5 km/h E
🌬️
Wind Gust
18.5 km/h
🌡️
Pressure
1014 mb
👁️
Visibility
16 km
☀️
UV Index
1.5 (Low)
🌧️
Precipitation
0.09 mm
☁️
Cloud Cover
0%
💦
Dew Point
20.4°C
🌐
Wind Degree
97°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
111.9 μg/m³
NO₂
1.1 μg/m³
O₃
69 μg/m³
SO₂
1.3 μg/m³
PM 2.5
3.4 μg/m³
PM 10
4.5 μg/m³

Weather Alerts 3

Met · Severe · Expected
Flood Warning issued April 17 at 5:40PM AST until April 18 at 5:30AM AST by NWS San Juan PR

* WHAT...Small stream flooding caused by excess runoff from previous rains is expected. * WHERE...Areas along Rio Culebrina and tributaries in Aguada, Aguadilla, Moca and San Sebastian. * WHEN...Until 530 AM AST Saturday. * IMPACTS...Streams continue to rise due to excess runoff from earlier rainfall. Low-water crossings are inundated with water and may not be passable. Expect many areas of slo...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Please report observed flooding to local emergency services or law enforcement and request they pass this informati...

Met · Severe · Immediate
Flood Warning issued April 17 at 8:40PM AST until April 18 at 5:30AM AST by NWS San Juan PR

* WHAT...River flooding caused by excess runoff continues. * WHERE...Areas along Rio Culebrina and tributaries in Aguada, Aguadilla, Moca and San Sebastian. * WHEN...Until 530 AM AST Saturday. * IMPACTS...Streams continue to rise due to excess runoff from earlier rainfall. Low-water crossings are inundated with water and may not be passable. Expect many areas of slow moving or standing water. I...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Please report observed flooding to local emergency services or law enforcement and request they pass this informati...

Met · Severe · Expected
Flood Warning issued April 18 at 6:11AM AST until April 18 at 12:00PM AST by NWS San Juan PR

* WHAT...Flooding due to overflowing of Rio Culebrinas. * WHERE...Aguada and Aguadilla. * WHEN...Until noon AST. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Low-water crossings are inundated with water and may not be passable. Expect many areas of slow moving or standing water. It will take several hours for all the wa...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.

Today's Hourly Forecast

24-hour breakdown for San Germán, Puerto Rico

12 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 82% 💨 14 km/h 🌧️ 89%
1 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 82% 💨 13.3 km/h 🌧️ 100%
2 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 81% 💨 13 km/h 🌧️ 100%
3 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 81% 💨 12.2 km/h 🌧️ 100%
4 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 81% 💨 11.5 km/h 🌧️ 100%
5 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 80% 💨 10.1 km/h 🌧️ 100%
6 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 80% 💨 9.7 km/h 🌧️ 100%
7 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 79% 💨 10.4 km/h 🌧️ 100%
8 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 89% 💨 11.5 km/h 🌧️ 100%
9 AM
Patchy rain nearby
26°
Patchy rain nearby
💧 73% 💨 13 km/h 🌧️ 100%
10 AM
Patchy rain nearby
27°
Patchy rain nearby
💧 69% 💨 13.3 km/h 🌧️ 100%
11 AM
Patchy rain nearby
27°
Patchy rain nearby
💧 67% 💨 11.9 km/h 🌧️ 100%
12 PM
Patchy rain nearby
27°
Patchy rain nearby
💧 68% 💨 11.2 km/h 🌧️ 100%
1 PM
Patchy rain nearby
27°
Patchy rain nearby
💧 71% 💨 11.5 km/h 🌧️ 100%
2 PM
Light rain shower
26°
Light rain shower
💧 73% 💨 10.4 km/h 🌧️ 100%
3 PM
Light rain shower
26°
Light rain shower
💧 72% 💨 8.6 km/h 🌧️ 100%
4 PM
Light rain shower
26°
Light rain shower
💧 72% 💨 7.6 km/h 🌧️ 100%
5 PM
Light rain shower
26°
Light rain shower
💧 73% 💨 8.3 km/h 🌧️ 100%
6 PM
Light rain shower
25°
Light rain shower
💧 77% 💨 9 km/h 🌧️ 100%
7 PM
Patchy rain nearby
25°
Patchy rain nearby
💧 79% 💨 8.6 km/h 🌧️ 100%
8 PM
Patchy rain nearby
25°
Patchy rain nearby
💧 78% 💨 9 km/h 🌧️ 100%
9 PM
Patchy rain nearby
25°
Patchy rain nearby
💧 78% 💨 9.4 km/h 🌧️ 100%
10 PM
Patchy rain nearby
24°
Patchy rain nearby
💧 79% 💨 9.4 km/h 🌧️ 100%
11 PM
Patchy rain nearby
24°
Patchy rain nearby
💧 80% 💨 8.3 km/h 🌧️ 100%

3-Day Forecast

Daily overview for San Germán, Puerto Rico

Today
Moderate rain
Moderate rain
27° / 24°
🌧️ 94% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 14 km/h
🌧️ Total precip: 15.01 mm
☀️ UV Index: 2.9
🌅 Sunrise: 06:10 AM
🌇 Sunset: 06:46 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Moderate rain
Moderate rain
27° / 23°
🌧️ 86% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 10.4 km/h
🌧️ Total precip: 12.29 mm
☀️ UV Index: 2.7
🌅 Sunrise: 06:09 AM
🌇 Sunset: 06:46 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Mon, Apr 20
Moderate rain
Moderate rain
27° / 23°
🌧️ 87% chance of rain
💧 Avg. humidity: 75%
💨 Max wind: 10.8 km/h
🌧️ Total precip: 5.66 mm
☀️ UV Index: 2.8
🌅 Sunrise: 06:08 AM
🌇 Sunset: 06:47 PM
🌙 Waxing Crescent
🌑 Moon: 9% lit

Best Time to Visit San Germán

Plan your trip to San Germán, United States around the most favorable weather conditions.

Peak Season
November – April
Dry season — low humidity, clear skies, comfortable temperatures.
Shoulder Season
May, October
Fewer crowds, moderate prices, mild weather.
Off Season
June – September
Wet/monsoon season; heavier rainfall possible.
← Back to San Germán 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in San Germán?
Current conditions in San Germán: Patchy rain nearby, temperature 24°C, humidity 89%.
What is the best time to visit San Germán?
The best time to visit San Germán is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in San Germán?
San Germán is located at approximately 18.1° latitude. It has a tropical or subtropical climate with wet and dry seasons.
Does it rain a lot in San Germán?
The wettest period in San Germán is typically during June – September. Wet/monsoon season; heavier rainfall possible.
What should I pack for a trip to San Germán?
For visits to San Germán during November – April: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What country is San Germán in?
San Germán is located in United States, in the state of Puerto Rico.
What are the public holidays in San Germán in 2026?
View the 2026 public holidays for San Germán on our Holidays page.
What are the GPS coordinates used for the weather forecast in San Germán?
The weather forecast for San Germán uses coordinates 18.0809, -67.0409.