Discover the San Blas Islands
The San Blas Islands are among the most beautiful islands in the Caribbean and perhaps even in the world. These tropical pearls are located in the north of Panama.
May in Isla Grande typically sees daytime highs of 29°C (84°F) and nighttime lows of 25°C (77°F). May falls within the rainy season, so heavy rainfall is to be expected.
Should you favor a climate that's both dry and comfortably warm, February and March typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Pick a month to see the average temperature, rainfall and sunshine in Isla Grande - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Isla Grande typically stay consistent throughout May, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 24°C (75°F).
Browse day-by-day weather records for Isla Grande spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Isla Grande spans 1976 to 2026, revealing these weather extremes.
Find out more about the weather in Panama and which places have the best travel conditions in this month. See all of Panama 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).
Warm but pleasant conditions in Isla Grande in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Isla Grande climate overview or explore weather in Panama.
Where to go in May - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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