June is close to Kailua's year-round average, with average highs near 25.7°C and lows around 24.2°C (mean 25°C). It is one of the drier months, averaging 20 mm of rainfall and 77% relative humidity across the period.
June is close to Kailua's year-round average. Across 45 years of records, the warmest June in Kailua was 2019 — when the month averaged 26.2°C — while the coldest was 1998 at 23.7°C. Typical June days reach 25.7°C with nights near 24.2°C. The long-term trend is warming, about 0.3°C per decade.
June is one of the drier months in Kailua, averaging 20 mm of rainfall. The wettest June on record was 2019 with 85 mm, while the driest was 2007 at 4 mm.
Relative humidity in Kailua during June averages 77%. The most humid June was 1982 at 82%, and the least humid was 2003 at 75%.
June receives about 7 kWh/m²/day of solar energy in Kailua. The sunniest Junes were 2021 and 2022 at 7.5 kWh/m²/day, and the cloudiest was 1990 at 6.3.
Average wind speed in Kailua during June is 6.4 m/s. The windiest June was 1997 at 7.6 m/s, while the calmest was 1982 at 4.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.5°C | 24.7°C | 25.1°C | 25.2°C | 25.5°C | +1°C |
| Avg High | 25.2°C | 25.3°C | 25.8°C | 25.9°C | 26.3°C | +1.1°C |
| Avg Low | 23.8°C | 24.1°C | 24.3°C | 24.4°C | 24.7°C | +0.9°C |
| Avg Rain | 19 mm | 12 mm | 19 mm | 32 mm | 18 mm | -1 mm |
June temperatures in Kailua have risen by about 1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 21.9°C (1982) to a record high of 28.6°C (2019).
Rainfall in June is one of the drier months, averaging 20 mm, with a wettest year of 85 mm.
A good time to visit Kailua
June is a good time to visit Kailua, with days averaging 25.7°C and nights around 24.2°C (mean 25°C, close to Kailua's yearly average) and low rainfall. February and April 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 | 26.7°C | 25.8°C | 25.0°C | 27.4°C | 24.3°C | 16 mm | 76% | 6.5 m/s | 7 |
| 2024 | 26.1°C | 25.3°C | 24.5°C | 27.1°C | 24.0°C | 8 mm | 78% | 6.7 m/s | 7.3 |
| 2023 | 26.4°C | 25.5°C | 24.7°C | 26.9°C | 23.5°C | 10 mm | 76% | 6.4 m/s | 7.3 |
| 2022 | 26.1°C | 25.2°C | 24.4°C | 26.6°C | 23.7°C | 24 mm | 78% | 6.3 m/s | 7.5 |
| 2021 | 26.2°C | 25.4°C | 24.5°C | 27.4°C | 24.1°C | 22 mm | 77% | 6 m/s | 7.5 |
| 2020 | 26.4°C | 25.6°C | 24.9°C | 27.2°C | 24.5°C | 26 mm | 77% | 6.5 m/s | 7.2 |
| 2019 🔥 🌧️ | 27.1°C | 26.2°C | 25.4°C | 28.6°C | 24.6°C | 85 mm | 77% | 5 m/s | 6.8 |
| 2018 | 26.1°C | 25.4°C | 24.6°C | 27.2°C | 23.6°C | 29 mm | 79% | 6.1 m/s | 7.1 |
| 2017 | 26.4°C | 25.7°C | 25.1°C | 27.2°C | 24.7°C | 36 mm | 78% | 6.2 m/s | 7 |
| 2016 | 25.8°C | 25.1°C | 24.5°C | 26.8°C | 23.3°C | 34 mm | 79% | 6.4 m/s | 7.1 |
| 2015 | 26.0°C | 25.2°C | 24.4°C | 27.4°C | 23.8°C | 21 mm | 79% | 5.4 m/s | 7.3 |
| 2014 | 26.0°C | 25.3°C | 24.5°C | 26.9°C | 23.7°C | 23 mm | 77% | 6.2 m/s | 7.2 |
| 2013 | 25.7°C | 25.0°C | 24.3°C | 26.3°C | 23.8°C | 22 mm | 77% | 7.1 m/s | 7 |
| 2012 | 24.9°C | 24.2°C | 23.5°C | 26.2°C | 23.1°C | 20 mm | 77% | 7.1 m/s | 6.9 |
| 2011 | 25.3°C | 24.7°C | 24.0°C | 26.3°C | 23.4°C | 40 mm | 78% | 7 m/s | 6.5 |
| 2010 | 25.5°C | 24.8°C | 24.1°C | 25.9°C | 23.6°C | 12 mm | 76% | 6.5 m/s | 7.1 |
| 2009 | 26.1°C | 25.4°C | 24.6°C | 27.0°C | 23.8°C | 15 mm | 76% | 6.4 m/s | 7.3 |
| 2008 | 25.8°C | 24.9°C | 24.1°C | 27.0°C | 23.3°C | 36 mm | 77% | 6 m/s | 7.2 |
| 2007 | 25.9°C | 25.2°C | 24.4°C | 26.3°C | 23.7°C | 4 mm | 76% | 6.7 m/s | 7.4 |
| 2006 | 25.8°C | 25.0°C | 24.3°C | 26.9°C | 23.7°C | 14 mm | 76% | 6.2 m/s | 7.4 |
| 2005 | 25.8°C | 25.2°C | 24.5°C | 26.2°C | 23.9°C | 23 mm | 77% | 7.1 m/s | 7.2 |
| 2004 | 26.2°C | 25.5°C | 24.8°C | 27.0°C | 24.0°C | 35 mm | 78% | 6.7 m/s | 7 |
| 2003 | 26.2°C | 25.4°C | 24.6°C | 27.6°C | 24.1°C | 18 mm | 75% | 5.6 m/s | 7.1 |
| 2002 | 25.9°C | 25.2°C | 24.4°C | 26.9°C | 23.8°C | 22 mm | 76% | 6.8 m/s | 7.2 |
| 2001 | 25.3°C | 24.6°C | 23.9°C | 26.9°C | 23.2°C | 17 mm | 78% | 6.7 m/s | 6.8 |
| 2000 | 25.3°C | 24.5°C | 23.8°C | 26.1°C | 22.9°C | 6 mm | 78% | 6 m/s | 7.3 |
| 1999 | 24.7°C | 24.1°C | 23.5°C | 25.6°C | 22.5°C | 11 mm | 75% | 6.9 m/s | 7.2 |
| 1998 ❄️ | 24.3°C | 23.7°C | 23.1°C | 24.8°C | 22.2°C | 20 mm | 78% | 7.2 m/s | 6.7 |
| 1997 | 26.1°C | 25.5°C | 24.8°C | 26.8°C | 24.2°C | 5 mm | 77% | 7.6 m/s | 7.1 |
| 1996 | 26.4°C | 25.7°C | 25.1°C | 27.6°C | 24.1°C | 12 mm | 77% | 6.3 m/s | 7.1 |
| 1995 | 25.5°C | 24.8°C | 24.1°C | 27.7°C | 23.3°C | 7 mm | 75% | 6.2 m/s | 6.8 |
| 1994 | 25.2°C | 24.5°C | 23.9°C | 26.9°C | 22.9°C | 10 mm | 77% | 7.1 m/s | 6.8 |
| 1993 | 25.5°C | 24.8°C | 24.1°C | 26.2°C | 23.5°C | 5 mm | 75% | 6.6 m/s | 6.9 |
| 1992 | 25.9°C | 25.3°C | 24.6°C | 27.1°C | 23.9°C | 11 mm | 76% | 6.8 m/s | 6.7 |
| 1991 | 25.0°C | 24.4°C | 23.7°C | 25.8°C | 23.1°C | 12 mm | 78% | 6.4 m/s | 6.6 |
| 1990 | 24.8°C | 24.2°C | 23.6°C | 25.6°C | 23.1°C | 24 mm | 78% | 7.4 m/s | 6.3 |
| 1989 | 25.6°C | 24.9°C | 24.2°C | 26.5°C | 23.6°C | 18 mm | 76% | 6.2 m/s | 6.4 |
| 1988 | 25.3°C | 24.7°C | 24.1°C | 26.2°C | 23.3°C | 19 mm | 78% | 6.7 m/s | 6.6 |
| 1987 | 25.1°C | 24.3°C | 23.5°C | 27.2°C | 23.0°C | 25 mm | 79% | 5.9 m/s | 6.8 |
| 1986 | 25.1°C | 24.5°C | 23.8°C | 26.1°C | 22.5°C | 15 mm | 80% | 7 m/s | 6.4 |
| 1985 | 24.6°C | 23.9°C | 23.1°C | 25.7°C | 21.9°C | 16 mm | 80% | 5.5 m/s | 6.6 |
| 1984 | 25.2°C | 24.6°C | 23.9°C | 25.8°C | 23.2°C | 18 mm | 77% | 6.7 m/s | 6.5 |
| 1983 | 24.6°C | 23.9°C | 23.3°C | 25.1°C | 22.4°C | 13 mm | 79% | 6.8 m/s | — |
| 1982 | 25.4°C | 24.7°C | 23.9°C | 26.3°C | 21.9°C | 30 mm | 82% | 4.2 m/s | — |
| 1981 | 25.5°C | 24.9°C | 24.2°C | 26.0°C | 23.6°C | 19 mm | 78% | 6.7 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 25.7°C with lows near 24.2°C (mean 25°C), based on 45 years of NASA POWER data.
June averages 20 mm of rainfall in Kailua, one of the drier months. The wettest on record was 85 mm in 2019.
The hottest June reached 28.6°C in 2019. The coldest dipped to 21.9°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1°C. Daytime highs moved from 25.1°C to 26.3°C and overnight lows from 23.7°C to 24.6°C over the same span.
June is close to Kailua's year-round average and one of the drier months, so plan for around 25.7°C daytime highs and 24.2°C at night.
Not quite — June is the 8th coolest month in Kailua, averaging 25°C.
For June in Kailua, pack light layers you can adjust through the day, with typical highs of 25.7°C and lows of 24.2°C.
Relative humidity in June averages 77% — quite humid.
Average wind speed in June is 6.4 m/s. The windiest June on record averaged 7.6 m/s (1997).
The wettest June on record was 2019 with 85 mm. On average, June sees 20 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 Kailua 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.
