When to go · San Juan
San Juan in May
Mixed month. Hotter, more showers.
Key facts
- Verdict
- Mixed
- Temperature
- 31°C (88°F)88°F (31°C) / 24°C (75°F)75°F (24°C)
- average high / low
- Rain days
- 14
- Crowds
- Low
- Puerto Rico overall
- Prices
- Low
- Puerto Rico overall
Verdict
Hotter, more showers.
All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.
Is another month better than May?
May is rated mixed. These months rate higher:
Weather in May
- San JuanHighs around 31 °C (88 °F), lows around 24 °C (75 °F), rain on about 14 daysHighs around 88 °F (31 °C), lows around 75 °F (24 °C), rain on about 14 days
- San Juan and north coast, Puerto Rico · San Juan, Isabela, Areciborainy
Around 27–31 °C (81–88 °F) all year; showers are short but frequent May–November; winter swells make some north-coast beaches rough.Around 81–88 °F (27–31 °C) all year; showers are short but frequent May–November; winter swells make some north-coast beaches rough.
Shoulder season
Fewer visitors and good prices.
Watch: Heat and humidity build.
Crowds and prices
- Crowds · Puerto Rico overall
- Low
- Prices · Puerto Rico overall
- Low
Puerto Rico overall: Showers begin; good value.
Compare two months
Weather, crowds and prices for any two months in San Juan, side by side.
Verdict
May: Mixed
Jan: Great (better)
Daytime high
May: 31 °C (88 °F)88 °F (31 °C)
Jan: 29 °C (84 °F)84 °F (29 °C)
Night low
May: 24 °C (75 °F)75 °F (24 °C)
Jan: 22 °C (72 °F)72 °F (22 °C)
Rain days
May: 14 (better)
Jan: 15
Crowds
May: Low
Jan: High
Prices
May: Low
Jan: High
Festivals listed
May: 0
Jan: 5
May: Hotter, more showers.
January: Dry, warm; Three Kings Day and Calle San Sebastián fiesta.
San Juan: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast