June is one of the warmer months of the year in Oceanside, with average highs near 21.2°C and lows around 15.6°C (mean 18.4°C). It is one of the drier months, averaging 4 mm of rainfall and 77% relative humidity across the period.
June is one of the warmer months of the year in Oceanside. Across 45 years of records, the warmest June in Oceanside was 1981 — when the month averaged 21.4°C — while the coldest was 1991 at 16.5°C. Typical June days reach 21.2°C with nights near 15.6°C. The long-term trend is cooling, about 0.2°C per decade.
June is one of the drier months in Oceanside, averaging 4 mm of rainfall. The wettest June on record was 2020 with 71 mm, while the driest were 2012, 2014 and 2018, among others at 0 mm.
Relative humidity in Oceanside during June averages 77%. The most humid June was 2010 at 83%, and the least humid was 1981 at 61%.
June receives about 7.2 kWh/m²/day of solar energy in Oceanside. The sunniest Junes were 2008 and 2014 at 8 kWh/m²/day, and the cloudiest was 2003 at 6.
Average wind speed in Oceanside during June is 2.3 m/s. The windiest Junes were 1982, 1992 and 1998 at 2.9 m/s, while the calmest was 1994 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.9°C | 18.4°C | 18.3°C | 18.0°C | 18.4°C | -0.5°C |
| Avg High | 22.0°C | 21.0°C | 20.9°C | 20.8°C | 21.0°C | -1°C |
| Avg Low | 15.8°C | 15.7°C | 15.6°C | 15.2°C | 15.8°C | 0°C |
| Avg Rain | 1 mm | 5 mm | 1 mm | 1 mm | 13 mm | +12 mm |
June temperatures in Oceanside have fallen by about 0.7°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 12.2°C (2011) to a record high of 31.1°C (1981).
Rainfall in June is one of the drier months, averaging 4 mm, with a wettest year of 71 mm.
A good time to visit Oceanside
June is a good time to visit Oceanside, with days averaging 21.2°C and nights around 15.6°C (mean 18.4°C, close to Oceanside's yearly average) and low rainfall. August and September are marginally more temperate, but June still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 20.8°C | 18.1°C | 15.4°C | 26.2°C | 13.9°C | 1 mm | 80% | 2.2 m/s | 7.3 |
| 2024 | 20.8°C | 18.2°C | 15.7°C | 25.8°C | 12.9°C | 1 mm | 81% | 2 m/s | 7.4 |
| 2023 | 19.3°C | 17.2°C | 15.1°C | 25.5°C | 13.3°C | 3 mm | 81% | 2.6 m/s | 6.7 |
| 2022 | 23.1°C | 20.0°C | 16.8°C | 29.0°C | 13.4°C | 1 mm | 72% | 2.2 m/s | 7.9 |
| 2021 | 21.2°C | 18.4°C | 15.6°C | 26.7°C | 13.2°C | 1 mm | 76% | 2.4 m/s | 7.4 |
| 2020 🌧️ | 21.0°C | 18.6°C | 16.2°C | 27.9°C | 14.9°C | 71 mm | 79% | 2.4 m/s | 7.2 |
| 2019 | 20.2°C | 17.6°C | 15.0°C | 25.9°C | 12.8°C | 5 mm | 81% | 2 m/s | 6.5 |
| 2018 | 20.8°C | 17.8°C | 14.8°C | 23.5°C | 13.1°C | 0 mm | 77% | 2.2 m/s | 7.7 |
| 2017 | 21.4°C | 18.5°C | 15.6°C | 28.7°C | 13.3°C | 0 mm | 77% | 2.3 m/s | 7.5 |
| 2016 | 22.2°C | 19.2°C | 16.3°C | 30.6°C | 13.9°C | 2 mm | 74% | 2.2 m/s | 7.2 |
| 2015 | 22.2°C | 19.4°C | 16.7°C | 26.5°C | 14.1°C | 4 mm | 76% | 2.1 m/s | 7.1 |
| 2014 | 21.7°C | 18.7°C | 15.6°C | 24.7°C | 14.0°C | 0 mm | 78% | 2.1 m/s | 8 |
| 2013 | 21.1°C | 18.3°C | 15.5°C | 27.1°C | 12.5°C | 0 mm | 78% | 2.3 m/s | 7.5 |
| 2012 | 19.7°C | 16.9°C | 14.1°C | 23.0°C | 12.6°C | 0 mm | 78% | 2.3 m/s | 7.8 |
| 2011 | 19.4°C | 16.8°C | 14.1°C | 24.4°C | 12.2°C | 1 mm | 80% | 2.2 m/s | 7.4 |
| 2010 | 19.3°C | 16.8°C | 14.2°C | 23.8°C | 13.4°C | 0 mm | 83% | 2 m/s | 7.2 |
| 2009 | 19.9°C | 17.8°C | 15.7°C | 25.2°C | 13.9°C | 1 mm | 79% | 2.7 m/s | 6.7 |
| 2008 | 22.1°C | 18.9°C | 15.6°C | 29.7°C | 12.3°C | 0 mm | 73% | 2.1 m/s | 8 |
| 2007 | 20.6°C | 17.6°C | 14.6°C | 25.5°C | 12.3°C | 0 mm | 76% | 2 m/s | 7.8 |
| 2006 | 23.0°C | 20.2°C | 17.3°C | 28.6°C | 15.2°C | 1 mm | 75% | 2.1 m/s | 7.1 |
| 2005 | 20.1°C | 17.8°C | 15.5°C | 24.5°C | 14.3°C | 2 mm | 80% | 2.7 m/s | 7.2 |
| 2004 | 20.1°C | 17.6°C | 15.1°C | 23.5°C | 14.0°C | 0 mm | 81% | 2.1 m/s | 7.1 |
| 2003 | 19.3°C | 17.0°C | 14.7°C | 25.3°C | 13.4°C | 2 mm | 82% | 2.3 m/s | 6 |
| 2002 | 20.3°C | 17.5°C | 14.7°C | 26.2°C | 13.1°C | 0 mm | 78% | 2.1 m/s | 7.6 |
| 2001 | 21.9°C | 19.3°C | 16.7°C | 26.0°C | 13.5°C | 0 mm | 75% | 2.1 m/s | 7.6 |
| 2000 | 22.2°C | 19.4°C | 16.5°C | 27.0°C | 13.7°C | 4 mm | 77% | 2.4 m/s | 7.7 |
| 1999 | 19.5°C | 17.0°C | 14.6°C | 23.8°C | 12.7°C | 7 mm | 78% | 2.4 m/s | 7.4 |
| 1998 | 19.5°C | 17.5°C | 15.5°C | 22.8°C | 14.2°C | 3 mm | 82% | 2.9 m/s | 6.9 |
| 1997 | 20.9°C | 18.6°C | 16.3°C | 24.2°C | 15.3°C | 2 mm | 79% | 2.7 m/s | 7.3 |
| 1996 | 21.7°C | 18.9°C | 16.1°C | 26.9°C | 14.0°C | 0 mm | 75% | 2.3 m/s | 7.9 |
| 1995 | 20.1°C | 17.4°C | 14.7°C | 26.2°C | 12.8°C | 12 mm | 80% | 2.6 m/s | 6.6 |
| 1994 | 22.1°C | 19.2°C | 16.4°C | 29.1°C | 13.7°C | 1 mm | 76% | 1.9 m/s | 7.3 |
| 1993 | 23.0°C | 20.1°C | 17.1°C | 29.4°C | 15.0°C | 14 mm | 75% | 2.5 m/s | 7.3 |
| 1992 | 21.4°C | 18.7°C | 16.1°C | 25.5°C | 14.3°C | 0 mm | 78% | 2.9 m/s | 6.8 |
| 1991 ❄️ | 19.0°C | 16.5°C | 14.0°C | 23.9°C | 12.6°C | 0 mm | 80% | 2.4 m/s | 6.9 |
| 1990 | 23.2°C | 20.0°C | 16.7°C | 30.3°C | 14.0°C | 13 mm | 70% | 2.6 m/s | 7.5 |
| 1989 | 21.6°C | 18.6°C | 15.6°C | 26.9°C | 13.6°C | 1 mm | 73% | 2.5 m/s | 6.9 |
| 1988 | 21.3°C | 18.2°C | 15.1°C | 25.1°C | 13.0°C | 0 mm | 74% | 2.6 m/s | 6.5 |
| 1987 | 22.2°C | 18.9°C | 15.6°C | 26.4°C | 13.8°C | 1 mm | 72% | 2.4 m/s | 7 |
| 1986 | 22.3°C | 19.1°C | 15.9°C | 26.9°C | 14.7°C | 0 mm | 73% | 2.2 m/s | 7.2 |
| 1985 | 22.5°C | 19.2°C | 15.9°C | 28.1°C | 13.4°C | 1 mm | 67% | 2.2 m/s | 7.3 |
| 1984 | 22.8°C | 19.8°C | 16.8°C | 26.6°C | 15.3°C | 2 mm | 69% | 2.6 m/s | 6.4 |
| 1983 | 20.6°C | 17.9°C | 15.1°C | 25.7°C | 13.7°C | 1 mm | 78% | 2.3 m/s | — |
| 1982 | 19.5°C | 17.0°C | 14.5°C | 22.3°C | 13.4°C | 2 mm | 79% | 2.9 m/s | — |
| 1981 🔥 | 25.1°C | 21.4°C | 17.6°C | 31.1°C | 14.4°C | 0 mm | 61% | 2.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 21.2°C with lows near 15.6°C (mean 18.4°C), based on 45 years of NASA POWER data.
June averages 4 mm of rainfall in Oceanside, one of the drier months. The wettest on record was 71 mm in 2020.
The hottest June reached 31.1°C in 1981. The coldest dipped to 12.2°C in 2011.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have fallen by about 0.7°C. Daytime highs moved from 22.1°C to 21°C and overnight lows from 16°C to 15.7°C over the same span.
June is one of the warmer months of the year in Oceanside and one of the drier months, so plan for around 21.2°C daytime highs and 15.6°C at night.
Not quite — June is the 8th coolest month in Oceanside, averaging 18.4°C.
For June in Oceanside, pack light layers you can adjust through the day, with typical highs of 21.2°C and lows of 15.6°C.
Relative humidity in June averages 77% — quite humid.
Average wind speed in June is 2.3 m/s. The windiest June on record averaged 2.9 m/s (1982).
The wettest June on record was 2020 with 71 mm. On average, June 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 June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
