San Juan weather — 10-day forecast

Temperature, rain, wind and feels-like in San Juan, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 22:00 · DWD ICON global model

28 °C

Partly cloudy

Feels like 31 °C

15.2 km/hforce 2

Next 12 h

  • 2228°
  • 2328°
  • 0028°
  • 0128°
  • 0228°
  • 0327°
  • 0427°
  • 0527°
  • 0627°
  • 06:05Sunrise
  • 0727°
  • 0828°
  • 0929°
  • 1031°

27°06:00 31°10:00

Humidity
78 %
Dew point
24 °C
Gusts
29.0 km/h
Clouds
56 %
Pressure
1,017 hPa ↑
Storm
possible

Grid point 4.3 km away · 13.0 km grid · elevation 5 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 20:00
19
Good

Index set by PM2.5

PM2.5
9.6µg/m³
PM10
17.8µg/m³
Ozone
31.4µg/m³
Nitrogen dioxide
0.4µg/m³
Sulphur dioxide
0.4µg/m³
Carbon monoxide
80.0µg/m³
Dust (AOD)
0.03

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

10 days

Each day's extremes and the chance of rain, out to the end of the run.

27° → 33°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Mainly clear10 %

    31°

    28°

  • Sat

    Mainly clear86 %

    32°

    27°

  • Sun

    Thunderstorm98 %

    31°

    28°

  • Mon

    Partly cloudy100 %

    32°

    28°

  • Tue

    Thunderstorm100 %

    32°

    28°

  • Wed

    Partly cloudy94 %

    33°

    27°

  • Thu

    Partly cloudy

    33°

    28°

  • Fri

    Partly cloudy

    32°

    29°

  • Sat

    Thunderstorm1 mm

    29°

    29°

  • Sun

    Thunderstorm8 mm

    29°

    27°

Gusts · Mon 51.1 km/h · Thu 56.1 km/h · Fri 62.1 km/h · Sat 50.9 km/h

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV12extreme
Sunrise
06:05
Daylight
12 h 52
Sunset
18:57

Radiation · 24.8 MJ/m²

Sea state

Sea state at the marine grid point closest to the city.

1.2 mperiod 7 s 56°

Significant height: the mean of the highest third of waves. Individual waves reach about twice it.

Data: ECMWF

Today in San Juan the mean temperature will be 29.3 °C — +2.1 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)

San Juan climate — normals and trends