July is one of the warmer months of the year in Oceanside, with average highs near 23.4°C and lows around 17.9°C (mean 20.7°C). It is one of the drier months, averaging 4 mm of rainfall and 75% relative humidity across the period.
July is one of the warmer months of the year in Oceanside. Across 45 years of records, the warmest July in Oceanside was 2006 — when the month averaged 23.8°C — while the coldest was 2010 at 18.1°C. Typical July days reach 23.4°C with nights near 17.9°C. The long-term July temperature trend is broadly flat.
July is one of the drier months in Oceanside, averaging 4 mm of rainfall. The wettest July on record was 1984 with 18 mm, while the driest was 2020 at 0 mm.
Relative humidity in Oceanside during July averages 75%. The most humid July was 1991 at 80%, and the least humid was 1981 at 63%.
July receives about 7.3 kWh/m²/day of solar energy in Oceanside. The sunniest July was 2016 at 8 kWh/m²/day, and the cloudiest was 1988 at 6.1.
Average wind speed in Oceanside during July is 2.2 m/s. The windiest Julys were 1999, 2000 and 2020, among others at 2.4 m/s, while the calmest were 2019 and 2023 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.2°C | 20.3°C | 20.7°C | 20.5°C | 20.6°C | -0.6°C |
| Avg High | 24.3°C | 23.0°C | 23.4°C | 23.2°C | 23.2°C | -1.1°C |
| Avg Low | 18.2°C | 17.7°C | 18.1°C | 17.9°C | 17.9°C | -0.3°C |
| Avg Rain | 5 mm | 4 mm | 3 mm | 5 mm | 2 mm | -2 mm |
July temperatures in Oceanside have fallen by about 1.2°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 13.4°C (2010) to a record high of 33°C (2006).
Rainfall in July is one of the drier months, averaging 4 mm, with a wettest year of 18 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
One of the best times to visit Oceanside
July is one of the best times to visit Oceanside. Expect days averaging 23.4°C and nights around 17.9°C (mean 20.7°C) — warmer than Oceanside's yearly average — with low rainfall (4 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 | 21.8°C | 19.3°C | 16.8°C | 24.5°C | 15.1°C | 3 mm | 80% | 2.3 m/s | 7.7 |
| 2024 | 23.7°C | 21.0°C | 18.4°C | 27.7°C | 15.9°C | 1 mm | 76% | 2.3 m/s | 7.5 |
| 2023 | 23.6°C | 20.9°C | 18.1°C | 27.4°C | 14.4°C | 0 mm | 75% | 1.8 m/s | 7.4 |
| 2022 | 23.1°C | 20.5°C | 17.9°C | 27.2°C | 16.4°C | 2 mm | 75% | 2.2 m/s | 7.6 |
| 2021 | 23.8°C | 21.2°C | 18.5°C | 27.7°C | 16.1°C | 7 mm | 71% | 2.2 m/s | 7.4 |
| 2020 | 23.1°C | 20.5°C | 17.9°C | 27.3°C | 16.1°C | 0 mm | 76% | 2.4 m/s | 7.9 |
| 2019 | 22.7°C | 19.9°C | 17.1°C | 28.5°C | 14.8°C | 3 mm | 76% | 1.8 m/s | 7.6 |
| 2018 | 25.6°C | 22.6°C | 19.6°C | 32.2°C | 14.3°C | 2 mm | 72% | 2.2 m/s | 7.4 |
| 2017 | 24.3°C | 21.4°C | 18.5°C | 29.6°C | 14.6°C | 3 mm | 74% | 2 m/s | 7.4 |
| 2016 | 24.1°C | 21.3°C | 18.5°C | 29.8°C | 15.6°C | 7 mm | 72% | 2.1 m/s | 8 |
| 2015 | 23.5°C | 21.0°C | 18.5°C | 26.7°C | 16.2°C | 17 mm | 79% | 2.3 m/s | 7 |
| 2014 | 24.4°C | 21.8°C | 19.1°C | 27.7°C | 16.2°C | 3 mm | 74% | 2.3 m/s | 7.4 |
| 2013 | 22.8°C | 20.3°C | 17.8°C | 26.1°C | 14.5°C | 7 mm | 76% | 2.2 m/s | 6.5 |
| 2012 | 22.1°C | 19.3°C | 16.5°C | 27.3°C | 14.2°C | 6 mm | 73% | 2.1 m/s | 7.3 |
| 2011 | 22.2°C | 19.7°C | 17.1°C | 26.3°C | 15.4°C | 3 mm | 76% | 2.2 m/s | 7.6 |
| 2010 ❄️ | 20.3°C | 18.1°C | 15.8°C | 27.1°C | 13.4°C | 2 mm | 80% | 2.2 m/s | 6.8 |
| 2009 | 23.9°C | 21.2°C | 18.4°C | 27.7°C | 14.9°C | 0 mm | 72% | 2.2 m/s | 7.9 |
| 2008 | 22.9°C | 20.2°C | 17.6°C | 25.8°C | 15.8°C | 1 mm | 76% | 1.9 m/s | 7.3 |
| 2007 | 23.2°C | 20.5°C | 17.8°C | 27.1°C | 16.1°C | 0 mm | 76% | 1.9 m/s | 7.4 |
| 2006 🔥 | 26.7°C | 23.8°C | 21.0°C | 33.0°C | 18.3°C | 7 mm | 72% | 2.3 m/s | 7.3 |
| 2005 | 23.5°C | 20.7°C | 17.9°C | 27.6°C | 14.6°C | 6 mm | 80% | 2.1 m/s | 7.3 |
| 2004 | 23.3°C | 20.6°C | 18.0°C | 26.6°C | 15.8°C | 1 mm | 75% | 2.2 m/s | 7.6 |
| 2003 | 23.5°C | 20.9°C | 18.3°C | 26.6°C | 15.4°C | 5 mm | 78% | 2 m/s | 6.9 |
| 2002 | 22.3°C | 19.7°C | 17.2°C | 25.5°C | 14.8°C | 1 mm | 77% | 2.1 m/s | 7.3 |
| 2001 | 22.4°C | 19.9°C | 17.3°C | 27.0°C | 15.4°C | 3 mm | 77% | 2.2 m/s | 7.5 |
| 2000 | 22.6°C | 20.0°C | 17.5°C | 26.7°C | 15.6°C | 4 mm | 75% | 2.4 m/s | 7.6 |
| 1999 | 22.4°C | 19.9°C | 17.4°C | 27.5°C | 14.0°C | 9 mm | 76% | 2.4 m/s | 7.5 |
| 1998 | 22.9°C | 20.5°C | 18.2°C | 27.0°C | 14.7°C | 3 mm | 78% | 2 m/s | 7.3 |
| 1997 | 22.6°C | 20.0°C | 17.5°C | 26.0°C | 15.8°C | 2 mm | 76% | 2.2 m/s | 7.4 |
| 1996 | 23.9°C | 21.2°C | 18.5°C | 28.0°C | 16.7°C | 2 mm | 73% | 2.2 m/s | 7.5 |
| 1995 | 23.7°C | 20.7°C | 17.7°C | 30.7°C | 15.7°C | 2 mm | 76% | 2.3 m/s | 7.3 |
| 1994 | 22.6°C | 19.9°C | 17.3°C | 25.4°C | 15.7°C | 1 mm | 77% | 2.2 m/s | 6.8 |
| 1993 | 21.7°C | 19.4°C | 17.1°C | 25.6°C | 16.1°C | 0 mm | 79% | 2.2 m/s | 6.4 |
| 1992 | 24.2°C | 21.4°C | 18.6°C | 28.3°C | 15.5°C | 4 mm | 77% | 2.3 m/s | 6.5 |
| 1991 | 21.3°C | 18.7°C | 16.2°C | 26.0°C | 15.0°C | 10 mm | 80% | 2.3 m/s | 6.5 |
| 1990 | 24.6°C | 21.6°C | 18.6°C | 28.9°C | 16.2°C | 2 mm | 70% | 2.2 m/s | 7.6 |
| 1989 | 24.3°C | 21.2°C | 18.1°C | 27.7°C | 15.5°C | 1 mm | 71% | 2 m/s | 7.5 |
| 1988 | 24.5°C | 21.3°C | 18.1°C | 28.3°C | 15.7°C | 1 mm | 74% | 2.1 m/s | 6.1 |
| 1987 | 21.7°C | 18.8°C | 16.0°C | 26.9°C | 14.4°C | 2 mm | 75% | 2.4 m/s | 6.8 |
| 1986 | 23.4°C | 20.5°C | 17.5°C | 27.1°C | 15.6°C | 7 mm | 69% | 2.4 m/s | 7.3 |
| 1985 | 25.6°C | 22.4°C | 19.1°C | 29.7°C | 16.7°C | 8 mm | 67% | 2 m/s | 6.9 |
| 1984 🌧️ | 26.5°C | 23.4°C | 20.4°C | 29.9°C | 17.9°C | 18 mm | 69% | 2.4 m/s | 6.6 |
| 1983 | 23.5°C | 20.6°C | 17.7°C | 28.1°C | 16.1°C | 0 mm | 72% | 2.1 m/s | — |
| 1982 | 23.6°C | 20.5°C | 17.5°C | 26.8°C | 15.0°C | 3 mm | 69% | 2.1 m/s | — |
| 1981 | 25.6°C | 22.3°C | 19.0°C | 28.8°C | 16.4°C | 1 mm | 63% | 2.4 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 23.4°C with lows near 17.9°C (mean 20.7°C), based on 45 years of NASA POWER data.
July averages 4 mm of rainfall in Oceanside, one of the drier months. The wettest on record was 18 mm in 1984.
The hottest July reached 33°C in 2006. The coldest dipped to 13.4°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have fallen by about 1.2°C. Daytime highs moved from 25°C to 23.2°C and overnight lows from 18.7°C to 17.9°C over the same span.
July is one of the warmer months of the year in Oceanside and one of the drier months, so plan for around 23.4°C daytime highs and 17.9°C at night.
Not quite — July is the 10th coolest month in Oceanside, averaging 20.7°C.
For July in Oceanside, pack light layers you can adjust through the day, with typical highs of 23.4°C and lows of 17.9°C.
Relative humidity in July averages 75% — moderately humid.
Average wind speed in July is 2.2 m/s. The windiest July on record averaged 2.4 m/s (1981).
The wettest July on record was 1984 with 18 mm. On average, July sees 4 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 Oceanside behaves each July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
