Castro Weather in January
Average highs run from 28°C on January 1 to 28°C on January 31, and lows from 17°C to 18°C. Normal precipitation for the month is 189 mm over about 22 wet days.
January day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
January at a glance
- Average high
- 27°C
- Average low
- 17°C
- Precipitation
- 189 mm
- Reanalysis high
- 35°CJan 16, 2006
- Reanalysis low
- 10°CJan 11, 1994
- Daylight
- 13 h 39 min to 13 h 14 min
- Cloud cover
- 77%
- Humidity
- 82%
- Dew point
- 18°C
- Wind
- 5.4 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 28°C | 17°C | 33°C 2019 | 13°C 2004 | 69% |
| Jan 2 | 28°C | 17°C | 33°C 2019 | 12°C 2004 | 71% |
| Jan 3 | 28°C | 17°C | 31°C 2019 | 12°C 2004 | 72% |
| Jan 4 | 27°C | 17°C | 31°C 1992 | 12°C 2012 | 73% |
| Jan 5 | 27°C | 17°C | 31°C 1992 | 12°C 2009 | 74% |
| Jan 6 | 27°C | 17°C | 31°C 2020 | 11°C 2009 | 75% |
| Jan 7 | 27°C | 17°C | 32°C 2006 | 14°C 2009 | 76% |
| Jan 8 | 27°C | 17°C | 32°C 2006 | 14°C 1998 | 76% |
| Jan 9 | 27°C | 17°C | 33°C 2006 | 13°C 1998 | 75% |
| Jan 10 | 27°C | 17°C | 33°C 2006 | 12°C 1994 | 75% |
| Jan 11 | 27°C | 17°C | 31°C 2008 | 10°C 1994 | 74% |
| Jan 12 | 27°C | 17°C | 30°C 1996 | 12°C 2013 | 74% |
| Jan 13 | 27°C | 17°C | 30°C 2006 | 13°C 2013 | 73% |
| Jan 14 | 27°C | 17°C | 32°C 2006 | 15°C 2005 | 73% |
| Jan 15 | 27°C | 17°C | 32°C 2006 | 15°C 2002 | 72% |
| Jan 16 | 27°C | 17°C | 35°C 2006 | 12°C 2002 | 71% |
| Jan 17 | 27°C | 17°C | 34°C 2006 | 12°C 2002 | 70% |
| Jan 18 | 27°C | 17°C | 32°C 1994 | 13°C 2002 | 70% |
| Jan 19 | 27°C | 17°C | 32°C 1992 | 13°C 1991 | 69% |
| Jan 20 | 27°C | 17°C | 31°C 1992 | 14°C 2016 | 69% |
| Jan 21 | 27°C | 17°C | 32°C 1991 | 14°C 2013 | 70% |
| Jan 22 | 27°C | 17°C | 32°C 2019 | 13°C 2013 | 70% |
| Jan 23 | 27°C | 17°C | 32°C 2019 | 13°C 2016 | 71% |
| Jan 24 | 27°C | 17°C | 30°C 2014 | 14°C 1992 | 71% |
| Jan 25 | 28°C | 17°C | 32°C 2007 | 14°C 2020 | 70% |
| Jan 26 | 28°C | 17°C | 33°C 2020 | 14°C 2005 | 70% |
| Jan 27 | 28°C | 17°C | 33°C 2020 | 13°C 2005 | 70% |
| Jan 28 | 28°C | 17°C | 32°C 2014 | 12°C 2012 | 70% |
| Jan 29 | 28°C | 18°C | 34°C 2019 | 14°C 2012 | 70% |
| Jan 30 | 28°C | 18°C | 34°C 2019 | 13°C 2000 | 70% |
| Jan 31 | 28°C | 18°C | 33°C 2014 | 14°C 2012 | 71% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- January 1
- sunrise 5:34 AM, sunset 7:13 PM
- January 31
- sunrise 5:56 AM, sunset 7:10 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.