San German Weather in May
May in San German brings high temperatures, with highs of 30°C (86°F) and nights dropping to 24°C (75°F). Rainfall is on the higher side this month, averaging around 98 mm (3.9 in), so keep a rain jacket handy.
Rainfall in San German in May
Typically, you can expect about 14 days of rain this month, with 98 mm (3.9 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in San German in May
Temperatures in San German in May top out at 30°C (86°F) and drop to 24°C (75°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April and December typically offer the best circumstances for San German.
San German Temperature in May
Min Temperature
Max Temperature
Chance of Rain
Precipitation
Rainy days
San German Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San German - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in San German typically stay consistent throughout May, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in May
Historical weather records for San German in May
Browse day-by-day weather records for San German spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San German historical weather extremes in May
The extremes listed below come from historical weather data collected in San German from 1979 through 2026.
- On May 18, 1997, temperatures climbed to 37°C (99°F), marking the warmest May day on record.
- The coldest May day was on May 20, 1979, with a maximum of 23°C (73°F).
- The coldest night in May in San German was on May 9, 1989, with a minimum of 19°C (66°F).
Best Places in Puerto Rico in May
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico in May →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San German in May
Warm temperatures in May make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in San German in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
San German 3-Day Forecast
See the full San German climate overview or explore weather in Puerto Rico.
Popular in May
Where to go in May - average daytime high across popular destinations.
San Juan
30°C (86°F) Rio Grande29°C (84°F) Aguada
29°C (84°F) Luquillo29°C (84°F) Culebra28°C (82°F) Rincon29°C (84°F) Vieques
28°C (82°F) Fajardo29°C (84°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most beautiful lakes in Canada
Explore Canada's stunning lakes: Lake Louise, Lake Superior, Maligne Lake, Emerald Lake, and Lake Okanagan, each offering unique beauty and activities.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Lake Atitlan: the most beautiful lake in the world
At Lake Atitlan you will be enchanted by beautiful volcanoes, amazing sunsets and the serene tranquility. Mix this with the vibrant Mayan community and you'll understand why Atitlan has something magical.