Weather forecast for tomorrow
San Juan, Costa Rica

Weather forecast for tomorrow

Friday, 30. May

Thunderstorms
05:12

17:54
CST
Thunderstorms
26°C / 20°C
  • Wind: 20km/h ESE
  • Humidity: 72%
  • Precip. probability: 67%
  • Precipitation: 6mm
  • UV index: 6
On Friday, 30th of May, unstable skies bring the chance of thunderstorms.
The chance of precipitation for tomorrow is high. However, the rainfall will be light. Temperature fluctuations between a temperate 26°C and a delightful 20°C are forecasted.
This forecasted maximum temperature is expected to mirror May's typical high of 24.3°C.
Sunrise will be at 05:12 and sunset at 17:54; tomorrow's daylight will last for 12h and 42min.

Frequently asked questions

What is the weather forecast for San Juan for tomorrow?
On Friday, scattered thunderstorms are expected to form.
Will it rain tomorrow?
With a probability of 67%, light precipitation of 6mm is forecasted in San Juan.
What will be the maximum temperature tomorrow?
Tomorrow, the highest temperature will be 26°C, while the lowest temperature will be 20°C.
The highest temperature will be in line with the average maximum of 24.3°C in May. The lowest temperature will be relatively higher than the average low of 16.9°C.
What time are sunrise and sunset tomorrow?
On Friday, in San Juan, sunrise will be at 05:12 and sunset at 17:54 (CST).
How long will the day be tomorrow?
Tomorrow, the daylight will last for 12h and 42min.

Hourly weather forecast

0h
  • 21°C
  • Feels like:
    21°C
Partly Cloudy
Partly Cloudy
  • Wind: 12km/h E
  • Pressure: 1014mbar
  • Humidity: 84%
  • Precip. probability: 11%
  • Precipitation: 0mm
  • Visibility: 8km
2h
  • 21°C
  • Feels like:
    21°C
Mostly Cloudy
Mostly Cloudy
  • Wind: 13km/h E
  • Pressure: 1013mbar
  • Humidity: 85%
  • Precip. probability: 11%
  • Precipitation: 0mm
  • Visibility: 7km
4h
  • 20°C
  • Feels like:
    21°C
Cloudy
Cloudy
  • Wind: 13km/h E
  • Pressure: 1013mbar
  • Humidity: 85%
  • Precip. probability: 10%
  • Precipitation: 0mm
  • Visibility: 8km
Sunrise: 05:12
6h
  • 21°C
  • Feels like:
    21°C
Cloudy
Cloudy
  • Wind: 14km/h E
  • Pressure: 1014mbar
  • Humidity: 83%
  • Precip. probability: 11%
  • Precipitation: 0mm
  • Visibility: 10km
8h
  • 23°C
  • Feels like:
    24°C
Cloudy
Cloudy
  • Wind: 18km/h E
  • Pressure: 1014mbar
  • Humidity: 73%
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Visibility: 14km
10h
  • 26°C
  • Feels like:
    27°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 18km/h E
  • Pressure: 1014mbar
  • Humidity: 63%
  • Precip. probability: 40%
  • Precipitation: 2mm
  • Visibility: 11km
12h
  • 26°C
  • Feels like:
    28°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 15km/h ESE
  • Pressure: 1013mbar
  • Humidity: 64%
  • Precip. probability: 48%
  • Precipitation: 1mm
  • Visibility: 11km
14h
  • 25°C
  • Feels like:
    27°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 15km/h SSW
  • Pressure: 1012mbar
  • Humidity: 70%
  • Precip. probability: 47%
  • Precipitation: 1mm
  • Visibility: 11km
16h
  • 23°C
  • Feels like:
    24°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 12km/h SSW
  • Pressure: 1012mbar
  • Humidity: 79%
  • Precip. probability: 49%
  • Precipitation: 3mm
  • Visibility: 6km
Sunset: 17:54
18h
  • 22°C
  • Feels like:
    23°C
Few Showers
Few Showers
  • Wind: 9km/h ESE
  • Pressure: 1013mbar
  • Humidity: 87%
  • Precip. probability: 33%
  • Precipitation: 1mm
  • Visibility: 6km
20h
  • 21°C
  • Feels like:
    22°C
Cloudy
Cloudy
  • Wind: 10km/h E
  • Pressure: 1014mbar
  • Humidity: 88%
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Visibility: 11km
22h
  • 21°C
  • Feels like:
    21°C
Cloudy
Cloudy
  • Wind: 9km/h E
  • Pressure: 1014mbar
  • Humidity: 88%
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Visibility: 12km
Tomorrow, a combination of dull, turbulent and rainy weather is predicted.
Rainfall is anticipated from 10h to 18h. With light precipitation of 3mm, the most intense rain will be falling from 15h to 17h.
The temperature will vary between the lowest temperature of 20°C and the highest temperature of 26°C. The warmest part of the day will be from 10h to 13h.
The maximum temperature will be close to the average high of 24.3°C in May. The minimum temperature will be also relatively higher than May's average low of 16.9°C.
Updated: May 29, 2025 @ 08:58:20 UTC
Published by: Weather Atlas | About Us
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