San Juan Weather in October
Average highs run from 30°C on October 1 to 29°C on October 31, and lows from 23°C to 23°C. Normal precipitation for the month is 233 mm over about 19 wet days.
October day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 30°C
- Average low
- 23°C
- Precipitation
- 233 mm
- Record high
- 38°COct 13, 1987
- Record low
- 17°COct 5, 1999
- Daylight
- 12 h 08 min to 12 h 15 min
- Cloud cover
- 77%
- Humidity
- 88%
- Dew point
- 24°C
- Wind
- 2.5 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Oct 1 | 30°C | 23°C | 36°C 2010 | 18°C 1981 | 54% |
| Oct 2 | 30°C | 23°C | 37°C 2010 | 18°C 1981 | 56% |
| Oct 3 | 30°C | 23°C | 37°C 2001 | 20°C 1992 | 56% |
| Oct 4 | 30°C | 23°C | 37°C 2017 | 21°C 1992 | 57% |
| Oct 5 | 30°C | 23°C | 37°C 2005 | 17°C 1999 | 58% |
| Oct 6 | 30°C | 23°C | 37°C 1995 | 20°C 2010 | 60% |
| Oct 7 | 30°C | 23°C | 36°C 2015 | 21°C 1996 | 60% |
| Oct 8 | 30°C | 23°C | 38°C 1987 | 20°C 1993 | 61% |
| Oct 9 | 30°C | 23°C | 37°C 1985 | 19°C 1975 | 61% |
| Oct 10 | 30°C | 23°C | 36°C 2001 | 20°C 1977 | 61% |
| Oct 11 | 30°C | 23°C | 37°C 2001 | 20°C 1996 | 60% |
| Oct 12 | 30°C | 23°C | 37°C 1987 | 20°C 2001 | 61% |
| Oct 13 | 30°C | 23°C | 38°C 1987 | 19°C 1996 | 63% |
| Oct 14 | 30°C | 23°C | 37°C 1987 | 20°C 1992 | 64% |
| Oct 15 | 30°C | 23°C | 36°C 2002 | 21°C 1996 | 63% |
| Oct 16 | 30°C | 23°C | 36°C 1991 | 21°C 1974 | 62% |
| Oct 17 | 30°C | 23°C | 36°C 1997 | 20°C 2010 | 62% |
| Oct 18 | 30°C | 23°C | 36°C 2016 | 20°C 2006 | 63% |
| Oct 19 | 30°C | 23°C | 37°C 2016 | 20°C 1973 | 62% |
| Oct 20 | 30°C | 23°C | 36°C 2016 | 20°C 1992 | 60% |
| Oct 21 | 30°C | 23°C | 36°C 1995 | 18°C 1973 | 59% |
| Oct 22 | 30°C | 23°C | 36°C 2015 | 20°C 1976 | 59% |
| Oct 23 | 29°C | 23°C | 36°C 2015 | 20°C 1992 | 60% |
| Oct 24 | 29°C | 23°C | 37°C 2015 | 20°C 1985 | 61% |
| Oct 25 | 29°C | 23°C | 36°C 1979 | 20°C 1992 | 62% |
| Oct 26 | 29°C | 23°C | 37°C 1988 | 20°C 1973 | 62% |
| Oct 27 | 29°C | 23°C | 37°C 1988 | 20°C 1973 | 60% |
| Oct 28 | 29°C | 23°C | 37°C 2009 | 20°C 1991 | 60% |
| Oct 29 | 29°C | 23°C | 36°C 2010 | 20°C 1976 | 60% |
| Oct 30 | 29°C | 23°C | 35°C 2008 | 20°C 1999 | 60% |
| Oct 31 | 29°C | 23°C | 36°C 1988 | 19°C 1999 | 62% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-5).
- October 1
- sunrise 5:39 AM, sunset 5:47 PM
- October 31
- sunrise 5:29 AM, sunset 5:44 PM
Other months
Sources
Records: NOAA GHCN-Daily, station PE000084377, every year on file, quality-flagged values removed. 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.