Weather tomorrow: San Juan
Forecast for tomorrow, 28 September: overcast. The daily air temperature range is 27 to 31 °C. Chance of precipitation tomorrow according to the daily forecast: 57%. Forecast precipitation amount: 1.3 mm. Wind from the east at 7.5 m/s.
monday 28 september
Overcast
+31°
+27°
Sunset 18:15
G/m activity 2
Precipitation probability 57%
Precipitation 1.3 mm
Wind
7.5 m/s
Pressure 1014.6 hPa
Index UV 11
Humidity 74%
Sunrise 06:14
Moon Waning Gibbous
Sunrise 06:14
Sunset 18:15
G/m activity 2
Moon Waning Gibbous
00:00
28°
SE
3.9 m/s01:00
27°
SE
3.6 m/s02:00
27°
SE
3.3 m/s03:00
27°
SE
3.6 m/s04:00
27°
SE
3.9 m/s05:00
27°
SE
4.4 m/s06:00
27°
SE
3.9 m/s07:00
28°
SE
4.2 m/s08:00
29°
SE
5.3 m/s09:00
29°
E
5.6 m/s10:00
30°
E
5.3 m/s11:00
30°
E
6.1 m/s12:00
30°
E
6.9 m/s13:00
30°
E
6.9 m/s14:00
30°
E
6.7 m/s15:00
30°
E
6.7 m/s16:00
30°
E
7.2 m/s17:00
29°
E
6.7 m/s18:00
29°
E
6.1 m/s19:00
28°
E
5.8 m/s20:00
28°
E
6.1 m/s21:00
28°
E
5.6 m/s22:00
28°
E
5.3 m/s23:00
28°
E
5.6 m/sWhat is the atmospheric pressure in San Juan tomorrow?
Pressure adjusted for location elevation. Location elevation: 7 m relative to sea level
Forecast for 28.09.2026 · Local time
Pressure: 1011.9–1014.6 hPa.
Minimum: 1011.9 hPa15:00–17:00
Maximum: 1014.6 hPa00:00–01:00Also at other hours
Largest change over 3 hours:
−2.7 hPa · 12:00–15:00
First of 3 intervals with the same change magnitude shown.
hPa · Change over the previous 3 hours
Colours show pressure relative to this day’s range
Lower · 1011.9 Scale midpoint · 1013.3 Higher · 1014.6 Largest change over 3 hoursWhat is the chance of precipitation in San Juan tomorrow?
Chance of precipitation tomorrow according to the daily forecast: 57%.
Precipitation for tomorrow
| 00:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 10% |
|---|---|---|
| 01:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 02:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 24% |
| 03:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 29% |
| 04:00 | Amount of precipitation in millimeters (mm): 2 mm | Probability of precipitation in percent (%): 71% |
| 05:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 26% |
| 06:00 | Amount of precipitation in millimeters (mm): 0.3 mm | Probability of precipitation in percent (%): 43% |
| 07:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 25% |
| 08:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 11% |
| 09:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 6% |
| 10:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 11:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 16% |
| 12:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 18% |
| 13:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 13% |
| 14:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 16% |
| 15:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 18% |
| 16:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 17% |
| 17:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 16% |
| 18:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 18% |
| 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 (%): 22% |
| 21:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 22% |
| 22:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 9% |
| 23:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 21% |
San Juan weather tomorrow: morning, afternoon and evening
Morning: overcast and light rain, +27 °C. Afternoon: overcast and showers, +30 °C. Evening: overcast, +29 °C.
According to the hourly forecast, tomorrow will be hottest from 10:00 to 16:00, at around +30 °C. Times are local.
Tomorrow's strongest winds are expected at 16:00 (from the east). The lightest winds are expected at 02:00 (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.
