San Juan in May
Warm and quieter
By Daan · Last reviewed October 2026
The short answer
May is one of the best months to visit San Juan.
May is warmer and wetter, but quiet and good value.
May in detail
What May actually feels like
- Weather
- 24–31°C
- Hot, with more frequent showers.
- Crowds
- Low–Moderate
- Quieter.
- Prices
- $$
- Good-value rates.
+Good value.
–More showers.
My tip for May
Plan beach time for mornings.
- Value
- Food
How May compares
Against the other eleven months
2nd of 12 overall in San Juan, 6th for weather, 3rd for space, 3rd for value. The emptiest month is September; the best value is September.
See all twelve months for San JuanNot set on May?
Even stronger months in San Juan
Weather
Weather in San Juan in May
In May San Juan averages a high of 31°C (88°F) and a low of 24°C (75°F), with about 141 mm of rain or snow over 14 wet days. The warmest month is June (around 32°C) and the coolest is January (around 28°C); the wettest month is November.
- Average high
- 31°C
- 88°F
- Average low
- 24°C
- 75°F
- Precipitation
- 141 mm
- Wet days
- 14
Climate data: NOAA (Luis Muñoz Marín International Airport, 1991–2020). Temperatures are averages of daily highs and lows.
Quick answers
San Juan in May: the questions people ask
- Is May a good time to visit San Juan?
- May is one of the best months to visit San Juan. It ranks 2 of 12 months in San Juan overall (6 for weather, 3 for space, 3 for value). The main upside: Good value. The main downside: More showers.
- What is the weather like in San Juan in May?
- Average highs are around 31°C and lows around 24°C. Expect about 141 mm of rain or snow over roughly 14 wet days. Hot, with more frequent showers. For comparison, the warmest month is June (around 32°C) and the coolest is January (around 28°C).
- Is San Juan crowded in May?
- Crowds are low–moderate. Quieter. The quietest month is September.
- How expensive is San Juan in May?
- Prices are at level 2 of 5 ($$). Good-value rates. The best-value month is September.
- When is the best time to visit San Juan?
- In the CrowdFreeViews month scores, April is the best month overall (May ranks 2 of 12). The quietest month is September and the best value is September.