October is one of the warmer months of the year in Chula Vista, with average highs near 25.4°C and lows around 14.7°C (mean 20°C). It is one of the drier months, averaging 13 mm of rainfall and 60% relative humidity across the period.
October is one of the warmer months of the year in Chula Vista. Across 45 years of records, the warmest October in Chula Vista was 2015 — when the month averaged 22.7°C — while the coldest was 2002 at 17.5°C. Typical October days reach 25.4°C with nights near 14.7°C. The long-term trend is warming, about 0.3°C per decade.
October is one of the drier months in Chula Vista, averaging 13 mm of rainfall. The wettest October on record was 2004 with 145 mm, while the driest were 2001, 2019 and 2024, among others at 0 mm.
Relative humidity in Chula Vista during October averages 60%. The most humid October was 2000 at 72%, and the least humid was 2008 at 44%.
October receives about 4.2 kWh/m²/day of solar energy in Chula Vista. The sunniest October was 2019 at 5.2 kWh/m²/day, and the cloudiest was 1987 at 3.4.
Average wind speed in Chula Vista during October is 2.1 m/s. The windiest October was 2007 at 2.6 m/s, while the calmest was 2024 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.6°C | 20.2°C | 19.4°C | 20.6°C | 20.8°C | +1.2°C |
| Avg High | 25.0°C | 25.7°C | 24.5°C | 26.0°C | 26.1°C | +1.1°C |
| Avg Low | 14.2°C | 14.8°C | 14.2°C | 15.2°C | 15.4°C | +1.2°C |
| Avg Rain | 17 mm | 6 mm | 19 mm | 12 mm | 7 mm | -10 mm |
October temperatures in Chula Vista have risen by about 1.2°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 7.2°C (2009) to a record high of 36.9°C (2012).
Rainfall in October is one of the drier months, averaging 13 mm, with a wettest year of 145 mm.
One of the best times to visit Chula Vista
October is one of the best times to visit Chula Vista. Expect days averaging 25.4°C and nights around 14.7°C (mean 20°C) — warmer than Chula Vista's yearly average — with low rainfall (13 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.1°C | 19.8°C | 14.5°C | 31.5°C | 11.2°C | 13 mm | 68% | 1.9 m/s | 4.6 |
| 2024 | 27.5°C | 21.8°C | 16.2°C | 33.8°C | 10.2°C | 0 mm | 53% | 1.6 m/s | 4.1 |
| 2023 | 26.5°C | 21.2°C | 15.8°C | 33.0°C | 11.5°C | 1 mm | 57% | 2 m/s | 4.5 |
| 2022 | 26.3°C | 20.8°C | 15.4°C | 30.7°C | 11.3°C | 9 mm | 64% | 1.8 m/s | 3.8 |
| 2021 | 24.0°C | 18.9°C | 13.8°C | 31.9°C | 10.0°C | 17 mm | 62% | 2.1 m/s | 4.5 |
| 2020 | 27.4°C | 22.2°C | 16.9°C | 34.4°C | 10.1°C | 1 mm | 55% | 1.7 m/s | 4.4 |
| 2019 | 26.3°C | 20.3°C | 14.2°C | 32.0°C | 10.3°C | 0 mm | 50% | 2.4 m/s | 5.2 |
| 2018 | 25.3°C | 20.3°C | 15.3°C | 31.1°C | 12.3°C | 9 mm | 61% | 2 m/s | 4.4 |
| 2017 | 27.6°C | 21.6°C | 15.6°C | 35.2°C | 12.0°C | 2 mm | 54% | 2 m/s | 4.6 |
| 2016 | 25.9°C | 20.6°C | 15.2°C | 32.6°C | 11.8°C | 3 mm | 62% | 1.8 m/s | 4.4 |
| 2015 🔥 | 27.5°C | 22.7°C | 18.0°C | 34.1°C | 14.5°C | 13 mm | 64% | 2 m/s | 4.4 |
| 2014 | 27.9°C | 22.3°C | 16.7°C | 34.9°C | 14.0°C | 1 mm | 60% | 1.7 m/s | 4.6 |
| 2013 | 24.0°C | 18.5°C | 13.0°C | 30.4°C | 9.8°C | 19 mm | 60% | 2.1 m/s | 4.4 |
| 2012 | 26.0°C | 20.9°C | 15.8°C | 36.9°C | 11.3°C | 7 mm | 59% | 2.2 m/s | 4.6 |
| 2011 | 25.9°C | 20.2°C | 14.6°C | 35.0°C | 10.7°C | 11 mm | 55% | 1.8 m/s | 4.1 |
| 2010 | 23.1°C | 18.4°C | 13.8°C | 32.8°C | 10.5°C | 51 mm | 71% | 2.2 m/s | 3.6 |
| 2009 | 24.5°C | 19.1°C | 13.7°C | 33.6°C | 7.2°C | 1 mm | 57% | 2.2 m/s | 4.6 |
| 2008 | 27.6°C | 21.7°C | 15.8°C | 33.6°C | 8.7°C | 2 mm | 44% | 2.1 m/s | 4.8 |
| 2007 | 24.7°C | 19.4°C | 14.1°C | 32.3°C | 10.6°C | 3 mm | 55% | 2.6 m/s | 4.7 |
| 2006 | 23.5°C | 18.4°C | 13.3°C | 29.5°C | 10.8°C | 6 mm | 63% | 2.1 m/s | 4.4 |
| 2005 | 24.6°C | 19.1°C | 13.6°C | 32.4°C | 11.0°C | 15 mm | 62% | 2 m/s | 4.3 |
| 2004 🌧️ | 22.9°C | 18.3°C | 13.7°C | 32.6°C | 10.0°C | 145 mm | 71% | 2.4 m/s | 4.1 |
| 2003 | 27.6°C | 22.1°C | 16.7°C | 33.9°C | 10.4°C | 1 mm | 55% | 1.9 m/s | 3.8 |
| 2002 ❄️ | 22.0°C | 17.5°C | 13.0°C | 30.7°C | 10.6°C | 1 mm | 71% | 2.1 m/s | 3.5 |
| 2001 | 25.5°C | 20.1°C | 14.8°C | 31.7°C | 12.0°C | 0 mm | 64% | 1.8 m/s | 3.7 |
| 2000 | 22.6°C | 18.0°C | 13.4°C | 29.3°C | 10.3°C | 18 mm | 72% | 2.3 m/s | 4 |
| 1999 | 28.5°C | 22.2°C | 15.9°C | 34.1°C | 12.3°C | 0 mm | 45% | 1.9 m/s | 4.9 |
| 1998 | 23.9°C | 18.9°C | 14.0°C | 30.0°C | 11.2°C | 5 mm | 62% | 2.1 m/s | 4.4 |
| 1997 | 24.4°C | 19.3°C | 14.2°C | 32.1°C | 9.7°C | 2 mm | 60% | 2.5 m/s | 4.5 |
| 1996 | 24.4°C | 19.0°C | 13.7°C | 32.9°C | 8.1°C | 19 mm | 57% | 2.2 m/s | 3.8 |
| 1995 | 26.6°C | 20.7°C | 14.7°C | 32.7°C | 12.8°C | 2 mm | 58% | 1.8 m/s | 4 |
| 1994 | 23.9°C | 18.7°C | 13.6°C | 30.5°C | 10.9°C | 2 mm | 60% | 2.3 m/s | 4.4 |
| 1993 | 25.7°C | 20.2°C | 14.6°C | 31.8°C | 11.5°C | 3 mm | 58% | 2 m/s | 4.2 |
| 1992 | 25.3°C | 20.3°C | 15.3°C | 31.7°C | 12.8°C | 13 mm | 66% | 1.9 m/s | 4.2 |
| 1991 | 26.8°C | 21.5°C | 16.2°C | 35.3°C | 8.0°C | 14 mm | 54% | 2.1 m/s | 3.9 |
| 1990 | 27.8°C | 21.6°C | 15.5°C | 32.6°C | 12.7°C | 2 mm | 49% | 2 m/s | 4.3 |
| 1989 | 24.4°C | 19.0°C | 13.6°C | 31.9°C | 8.5°C | 10 mm | 61% | 2.2 m/s | 3.9 |
| 1988 | 26.7°C | 20.9°C | 15.0°C | 32.2°C | 11.3°C | 1 mm | 61% | 1.7 m/s | 3.6 |
| 1987 | 26.1°C | 21.1°C | 16.0°C | 35.4°C | 13.1°C | 72 mm | 66% | 1.8 m/s | 3.4 |
| 1986 | 24.0°C | 18.7°C | 13.4°C | 28.8°C | 10.5°C | 36 mm | 61% | 1.9 m/s | 4.1 |
| 1985 | 25.3°C | 19.9°C | 14.5°C | 33.5°C | 11.8°C | 12 mm | 59% | 2 m/s | 4.2 |
| 1984 | 23.6°C | 18.4°C | 13.2°C | 30.8°C | 9.9°C | 6 mm | 59% | 2.5 m/s | 4.3 |
| 1983 | 25.8°C | 20.7°C | 15.5°C | 32.4°C | 13.1°C | 11 mm | 65% | 2.3 m/s | — |
| 1982 | 25.8°C | 19.9°C | 14.1°C | 28.9°C | 10.5°C | 2 mm | 46% | 2.2 m/s | — |
| 1981 | 23.1°C | 17.8°C | 12.4°C | 29.6°C | 8.4°C | 6 mm | 58% | 2.5 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 25.4°C with lows near 14.7°C (mean 20°C), based on 45 years of NASA POWER data.
October averages 13 mm of rainfall in Chula Vista, one of the drier months. The wettest on record was 145 mm in 2004.
The hottest October reached 36.9°C in 2012. The coldest dipped to 7.2°C in 2009.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.2°C. Daytime highs moved from 24.7°C to 25.9°C and overnight lows from 13.9°C to 15.1°C over the same span.
October is one of the warmer months of the year in Chula Vista and one of the drier months, so plan for around 25.4°C daytime highs and 14.7°C at night.
Not quite — October is the 9th coolest month in Chula Vista, averaging 20°C.
For October in Chula Vista, pack light layers you can adjust through the day, with typical highs of 25.4°C and lows of 14.7°C.
Relative humidity in October averages 60% — moderately humid.
Average wind speed in October is 2.1 m/s. The windiest October on record averaged 2.6 m/s (2007).
The wettest October on record was 2004 with 145 mm. On average, October sees 13 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Chula Vista behaves each October, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for October specifically, along with year-by-year records and how the month has changed over the decades.
