Monthly climate averages for Palmarejo, Puerto Rico. Based on 10-year ERA5 reanalysis data.
Am Tropical Monsoon
Climate OverviewPalmarejo, Puerto Rico in May has hot conditions, with highs reaching 28.5°C (83°F) and afternoons the warmest part of the day. Rain falls on about 19 days this month, totalling around 84 mm. Sea temperature reaches 29.1°C (84°F).
This month falls at the end of Spring.
Temperatures remain fairly steady throughout May, with daily highs around 28°C (82°F).
May sees fairly even rainfall, totalling about 83 mm across the month.
The warmest days tend to fall around the 19th, averaging 28.9°C (84°F).
Daily averages based on historical data (2016–2025)
Daytime temperatures around 29°C (83°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.
Recent yearly records for May have stayed close to the long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 27°C / 21°C | 28°C / 22°C | 11days (30 mm) Wet | 10.4h Excellent | 82% Humid | 6.5 High | Excellent | View Details |
| February best | 27°C / 21°C | 28°C / 22°C | 12days (44 mm) Wet | 10.7h Excellent | 80% Humid | 7.5 Very High | Excellent | View Details |
| March best | 27°C / 21°C | 30°C / 22°C | 13days (50 mm) Wet | 10.9h Excellent | 80% Humid | 8.4 Very High | Excellent | View Details |
| April | 28°C / 21°C | 31°C / 24°C | 18days (83 mm) Wet | 11.3h Excellent | 81% Humid | 8.5 Very High | Wet | View Details |
| May | 29°C / 23°C | 33°C / 25°C | 19days (84 mm) Wet | 11.5h Excellent | 83% Humid | 8.7 Very High | Wet | View Details |
| June | 29°C / 24°C | 33°C / 26°C | 16days (62 mm) Wet | 11.9h Excellent | 82% Humid | 8.6 Very High | Fair | View Details |
| July | 30°C / 24°C | 33°C / 27°C | 18days (90 mm) Wet | 11.6h Excellent | 82% Humid | 8.6 Very High | Wet | View Details |
| August | 30°C / 24°C | 34°C / 27°C | 19days (103 mm) Wet | 11.1h Excellent | 83% Humid | 8.7 Very High | Wet | View Details |
| September | 29°C / 24°C | 35°C / 28°C | 23days (169 mm) Wet | 10.5h Excellent | 86% Very Muggy | 8.4 Very High | Wet | View Details |
| October | 29°C / 23°C | 34°C / 27°C | 23days (141 mm) Wet | 9.8h Good | 88% Very Muggy | 7.4 Very High | Wet | View Details |
| November | 28°C / 23°C | 32°C / 25°C | 18days (120 mm) Wet | 9.6h Good | 87% Very Muggy | 6.5 High | Wet | View Details |
| December best | 27°C / 22°C | 29°C / 24°C | 12days (38 mm) Wet | 10.2h Excellent | 84% Humid | 6.1 High | Excellent | View Details |
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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