How warm is it in San Juan in June?

Daytime highs averaged 30.7 °C, night-time lows 26.3 °C. The highest value of the past 10 years was 32.7 °C (7 Jun 2023), the lowest 24.8 °C (1 Jun 2019).

How often does it rain in San Juan in June?

On average there were 18.8 rain days (at least 1 mm) with 72.3 mm of precipitation in total.

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San Juan weather in June: temperature & rain

Photo: P. Hughes · CC BY-SA 4.0

🇵🇷 Weather in San Juan in June

This is what the weather in San Juan (Puerto Rico) was like in June over the years 2017–2026.

Key facts at a glance

Prevailing weather: Light rain

Avg. daytime high

30.7 °C

29.6 °C – 31.9 °C

Avg. night-time low

26.3 °C

25.8 °C – 27.3 °C

Avg. rain days in period

18.8

63 % of days · ≥ 1.0 mm

Avg. precipitation in period

72.3 mm

31.2 mm – 153 mm

Avg. cloud cover

70 %

This data source has no sunshine hours – average cloud cover is shown instead.

Avg. sea temperature

–

Sea temperature unavailable for today (daily limit).

Extremes: Highest temperature 32.7 °C (7 Jun 2023) · Lowest temperature 24.8 °C (1 Jun 2019) · Avg. daily peak wind 22 km/h

Weather mix of all days

86Partly cloudy
26Cloudy
152Light rain
36Rain

Summary

On average 30.7 °C during the day and 26.3 °C at night.
On average 18.8 rain days (Rain day = at least 1.0 mm of precipitation) with 72.3 mm of precipitation in total.
Prevailing weather: Light rain.
Warmest year: 2023 (avg. 31.9 °C), coolest: 2021 (avg. 29.6 °C).
Wettest year: 2024 (153 mm), driest: 2026 (31.2 mm).
Extremes: 32.7 °C on 7 Jun 2023 and 24.8 °C on 1 Jun 2019.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max31.3°Avg. min26.4°
Rain days
12 Rain days
Precipitation
31.2 mm
Avg. cloud cover
66 % cloudy
Sea temperature
–
Max 31.9 °C · Min 25.7 °C
2025
Avg. max30.2°Avg. min26.2°
Rain days
23 Rain days
Precipitation
72.3 mm
Avg. cloud cover
75 % cloudy
Sea temperature
–
Max 30.9 °C · Min 25.5 °C
2024
Avg. max30.4°Avg. min27.2°
Rain days
25 Rain days
Precipitation
153 mm
Avg. cloud cover
80 % cloudy
Sea temperature
–
Max 31.4 °C · Min 26.7 °C
2023
Avg. max31.9°Avg. min27.3°
Rain days
18 Rain days
Precipitation
52.9 mm
Avg. cloud cover
62 % cloudy
Sea temperature
–
Max 32.7 °C · Min 26.8 °C
2022
Avg. max30.8°Avg. min26.1°
Rain days
14 Rain days
Precipitation
58.0 mm
Avg. cloud cover
67 % cloudy
Sea temperature
–
Max 31.7 °C · Min 25.2 °C
2021
Avg. max29.6°Avg. min25.8°
Rain days
29 Rain days
Precipitation
124 mm
Avg. cloud cover
81 % cloudy
Sea temperature
–
Max 30.5 °C · Min 25.2 °C
2020
Avg. max31.3°Avg. min26.6°
Rain days
16 Rain days
Precipitation
36.4 mm
Avg. cloud cover
65 % cloudy
Sea temperature
–
Max 32.5 °C · Min 25.8 °C
2019
Avg. max30.6°Avg. min25.9°
Rain days
15 Rain days
Precipitation
45.5 mm
Avg. cloud cover
63 % cloudy
Sea temperature
–
Max 31.4 °C · Min 24.8 °C
2018
Avg. max30.5°Avg. min25.8°
Rain days
17 Rain days
Precipitation
73.3 mm
Avg. cloud cover
75 % cloudy
Sea temperature
–
Max 31.6 °C · Min 25.2 °C
2017
Avg. max30.2°Avg. min26.0°
Rain days
19 Rain days
Precipitation
76.2 mm
Avg. cloud cover
66 % cloudy
Sea temperature
–
Max 31.0 °C · Min 25.0 °C

Frequently asked questions

How warm is it in San Juan in June?: Daytime highs averaged 30.7 °C, night-time lows 26.3 °C. The highest value of the past 10 years was 32.7 °C (7 Jun 2023), the lowest 24.8 °C (1 Jun 2019).
How often does it rain in San Juan in June?: On average there were 18.8 rain days (at least 1 mm) with 72.3 mm of precipitation in total.

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Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. Snow depth is the model value for the grid cell, not the depth on the slopes. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)