Oeiras Weather in January
Average highs run from 34°C on January 1 to 32°C on January 31, and lows from 23°C to 22°C. Normal precipitation for the month is 140 mm over about 19 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
- 32°C
- Average low
- 23°C
- Precipitation
- 140 mm
- Reanalysis high
- 40°CJan 26, 2006
- Reanalysis low
- 19°CJan 24, 1997
- Daylight
- 12 h 32 min to 12 h 24 min
- Cloud cover
- 75%
- Humidity
- 68%
- Dew point
- 20°C
- Wind
- 9.7 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 | 34°C | 23°C | 39°C 1992 | 21°C 1993 | 54% |
| Jan 2 | 33°C | 23°C | 39°C 1992 | 21°C 2006 | 56% |
| Jan 3 | 33°C | 23°C | 39°C 1992 | 21°C 2010 | 58% |
| Jan 4 | 33°C | 23°C | 39°C 1992 | 20°C 2010 | 58% |
| Jan 5 | 33°C | 23°C | 40°C 1992 | 21°C 2000 | 58% |
| Jan 6 | 33°C | 23°C | 40°C 1992 | 20°C 2010 | 59% |
| Jan 7 | 33°C | 23°C | 40°C 1992 | 20°C 1995 | 61% |
| Jan 8 | 33°C | 23°C | 40°C 2005 | 21°C 2002 | 60% |
| Jan 9 | 33°C | 23°C | 38°C 2012 | 20°C 1995 | 60% |
| Jan 10 | 33°C | 23°C | 37°C 2012 | 20°C 1995 | 59% |
| Jan 11 | 33°C | 23°C | 37°C 2008 | 21°C 2010 | 60% |
| Jan 12 | 32°C | 23°C | 38°C 2005 | 21°C 2000 | 60% |
| Jan 13 | 32°C | 23°C | 38°C 1992 | 21°C 1998 | 60% |
| Jan 14 | 32°C | 23°C | 38°C 2006 | 21°C 2002 | 61% |
| Jan 15 | 32°C | 23°C | 38°C 2006 | 20°C 1995 | 62% |
| Jan 16 | 32°C | 23°C | 38°C 2006 | 19°C 1995 | 63% |
| Jan 17 | 32°C | 23°C | 39°C 1992 | 20°C 2000 | 63% |
| Jan 18 | 32°C | 23°C | 37°C 2014 | 21°C 2001 | 63% |
| Jan 19 | 32°C | 23°C | 38°C 2007 | 20°C 2002 | 64% |
| Jan 20 | 32°C | 23°C | 38°C 2007 | 21°C 1999 | 66% |
| Jan 21 | 32°C | 23°C | 39°C 2007 | 19°C 2002 | 66% |
| Jan 22 | 32°C | 23°C | 39°C 2007 | 20°C 1991 | 65% |
| Jan 23 | 32°C | 23°C | 39°C 2007 | 20°C 2012 | 64% |
| Jan 24 | 32°C | 23°C | 38°C 2007 | 19°C 1997 | 66% |
| Jan 25 | 32°C | 23°C | 39°C 2006 | 20°C 1996 | 66% |
| Jan 26 | 32°C | 22°C | 40°C 2006 | 20°C 2000 | 67% |
| Jan 27 | 32°C | 22°C | 40°C 2006 | 19°C 2009 | 66% |
| Jan 28 | 32°C | 22°C | 39°C 2006 | 20°C 2009 | 65% |
| Jan 29 | 32°C | 22°C | 38°C 2015 | 19°C 1997 | 65% |
| Jan 30 | 32°C | 22°C | 38°C 2015 | 20°C 2016 | 65% |
| Jan 31 | 32°C | 22°C | 39°C 2018 | 21°C 2016 | 63% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- January 1
- sunrise 5:36 AM, sunset 6:08 PM
- January 31
- sunrise 5:50 AM, sunset 6:14 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.