Weather tomorrow: San Juan
Forecast for tomorrow, 29 September: overcast. The daily air temperature range is 27 to 37 °C. Chance of precipitation tomorrow according to the daily forecast: 19%. Forecast precipitation amount: 0.1 mm. Wind from the southeast at 9.2 m/s.
tuesday 29 september
Overcast
+37°
+27°
Sunset 19:21
G/m activity 2
Precipitation probability 19%
Precipitation 0.1 mm
Wind
9.2 m/s
Pressure 1002.6 hPa
Index UV 9
Humidity 62%
Sunrise 07:25
Moon Waning Gibbous
Sunrise 07:25
Sunset 19:21
G/m activity 2
Moon Waning Gibbous
00:00
28°
SE
6.1 m/s01:00
28°
SE
5.8 m/s02:00
28°
SE
5.3 m/s03:00
28°
SE
5 m/s04:00
28°
SE
4.7 m/s05:00
27°
SE
5 m/s06:00
27°
SE
5 m/s07:00
27°
SE
5 m/s08:00
27°
SE
5.3 m/s09:00
28°
SE
6.4 m/s10:00
30°
SE
6.7 m/s11:00
32°
SE
6.7 m/s12:00
34°
SE
7.2 m/s13:00
36°
SE
7.8 m/s14:00
37°
SE
8.3 m/s15:00
37°
SE
8.9 m/s16:00
36°
SE
8.9 m/s17:00
36°
SE
8.9 m/s18:00
34°
SE
9.2 m/s19:00
32°
SE
8.6 m/s20:00
31°
SE
8.1 m/s21:00
30°
SE
7.8 m/s22:00
29°
SE
7.8 m/s23:00
29°
SE
7.8 m/sWhat is the atmospheric pressure in San Juan tomorrow?
Pressure adjusted for location elevation. Location elevation: 36 m relative to sea level
Forecast for 29.09.2026 · Local time
Pressure: 999.9–1005.3 hPa.
Minimum: 999.9 hPa15:00–18:00
Maximum: 1005.3 hPa00:00–03:00Also at other hours
Largest change over 3 hours:
−4 hPa · 11:00–14:00
First of 2 intervals with the same change magnitude shown.
hPa · Change over the previous 3 hours
Colours show pressure relative to this day’s range
Lower · 999.9 Scale midpoint · 1002.6 Higher · 1005.3 Largest change over 3 hoursWhat is the chance of precipitation in San Juan tomorrow?
Chance of precipitation tomorrow according to the daily forecast: 19%.
Precipitation for tomorrow
| 00:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 20% |
|---|---|---|
| 01:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 21% |
| 02:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 21% |
| 03:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 21% |
| 04:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 23% |
| 05:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 24% |
| 06:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 25% |
| 07:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 24% |
| 08:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 23% |
| 09:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 19% |
| 10:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 15% |
| 11:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 12:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 13:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 4% |
| 14:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 4% |
| 15:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 4% |
| 16:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 3% |
| 17:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 18:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 19:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 20:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 9% |
| 21:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
| 22:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 12% |
| 23:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 17% |
San Juan weather tomorrow: morning, afternoon and evening
Morning: overcast and showers, +27 °C. Afternoon: cloudy, +34 °C. Evening: overcast, +34 °C.
According to the hourly forecast, tomorrow will be hottest from 14:00 to 15:00, at around +37 °C. Times are local.
Tomorrow's strongest winds are expected at 18:00 (from the southeast). The lightest winds are expected at 04:00 (from the southeast). Times are local.
Temperature and wind for tomorrow
What geomagnetic activity is forecast for San Juan tomorrow?
The highest forecast Kp index for tomorrow is 2.
