Temperature
Hot by day, warm at night.
85°Ftypical May high
Typical range
May climate
May in San Juan
Puerto Rico · Caribbean
Hot afternoons and some sun. Humid air is the main drawback.
Some tradeoffs
Early to mid
Daytime high
85°F
Lows around 76°F
Rain
Rainy spells
Sun
12 h/day
Air feel
Humid
Sea temp
82°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
Rain is frequent, but usually comes in brief, on-and-off spells. About 15 wet days this month.
48%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
11.8 hMay sunshine
Heat & humidity by month
Warm days, with humid periods.
81%May Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In May, afternoons feel about 87° and nights feel near 83°.
WarmHotNight hours
Clear sky
Partly cloudy skies this month.
41%May Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in May.
9 mphMay Light breeze
Sea temperature
82°FMay sea temp
More detailIncludes daypart comfort
Typical May day
May late afternoons are around 83°F, easing to about 80°F in early evening.
Avg temp Typical range
Morning82°F
Feels 86°F
Rain22%
Cloud56%
Humid airVery high
Sun intensityModerate
Midday85°F
Feels 88°F
Rain37%
Cloud64%
Humid airVery high
Sun intensityStrong
Late afternoon83°F
Feels 87°F
Rain45%
Cloud67%
Humid airVery high
Sun intensityModerate
Early evening80°F
Feels 85°F
Rain22%
Cloud61%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 82 | 73 | 1.5 | 10 | 10.9 | 79 | 80 |
| Feb | 82 | 73 | 1.2 | 9 | 11.0 | 77 | 80 |
| Mar | 83 | 73 | 1.6 | 9 | 11.2 | 76 | 80 |
| Apr | 84 | 75 | 3.0 | 12 | 11.9 | 78 | 80 |
| May | 85 | 76 | 4.0 | 15 | 11.8 | 80 | 82 |
| Jun | 87 | 78 | 2.4 | 13 | 12.3 | 79 | 83 |
| Jul | 87 | 79 | 2.7 | 16 | 12.3 | 79 | 83 |
| Aug | 87 | 79 | 3.4 | 19 | 11.7 | 81 | 84 |
| Sep | 87 | 79 | 5.2 | 21 | 10.7 | 82 | 85 |
| Oct | 86 | 78 | 4.8 | 20 | 10.5 | 83 | 85 |
| Nov | 84 | 76 | 4.2 | 18 | 10.2 | 83 | 83 |
| Dec | 82 | 75 | 1.9 | 13 | 10.6 | 81 | 82 |
Similar climates
Similar
Similar travel styleHavanaCubaSimilar travel styleChennaiIndiaSimilar travel styleDar es SalaamTanzaniaSimilar travel styleKaohsiungTaiwan
Want a side-by-side climate view? Compare San Juan with Havana.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology