June is one of the warmer months of the year in Bangor, with average highs near 15.3°C and lows around 11.5°C (mean 13.4°C). It is one of the drier months, averaging 77 mm of rainfall and 84% relative humidity across the period.
June is one of the warmer months of the year in Bangor. Across 45 years of records, the warmest June in Bangor was 2023 — when the month averaged 16.1°C — while the coldest was 1991 at 11.6°C. Typical June days reach 15.3°C with nights near 11.5°C. The long-term trend is warming, about 0.4°C per decade.
June is one of the drier months in Bangor, averaging 77 mm of rainfall. The wettest June on record was 2012 with 204 mm, while the driest was 2018 at 23 mm.
Relative humidity in Bangor during June averages 84%. The most humid June was 2017 at 87%, and the least humid was 2018 at 79%.
June receives about 5.4 kWh/m²/day of solar energy in Bangor. The sunniest June was 2018 at 6.3 kWh/m²/day, and the cloudiest was 1987 at 4.4.
Average wind speed in Bangor during June is 4.1 m/s. The windiest June was 2002 at 5.2 m/s, while the calmest was 2010 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.8°C | 12.9°C | 13.6°C | 13.7°C | 14.3°C | +1.5°C |
| Avg High | 14.8°C | 14.7°C | 15.4°C | 15.6°C | 16.3°C | +1.5°C |
| Avg Low | 10.9°C | 11.1°C | 11.8°C | 11.8°C | 12.4°C | +1.5°C |
| Avg Rain | 66 mm | 80 mm | 73 mm | 91 mm | 71 mm | +5 mm |
June temperatures in Bangor have risen by about 1.6°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 6.8°C (1991) to a record high of 24.9°C (2018).
Rainfall in June is one of the drier months, averaging 77 mm, with a wettest year of 204 mm.
One of the best times to visit Bangor
June is one of the best times to visit Bangor. Expect days averaging 15.3°C and nights around 11.5°C (mean 13.4°C) — warmer than Bangor's yearly average — with moderate rainfall (77 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 | 16.6°C | 14.8°C | 13.1°C | 24.2°C | 10.0°C | 116 mm | 85% | 4.8 m/s | 5.2 |
| 2024 | 14.7°C | 13.1°C | 11.5°C | 20.7°C | 8.9°C | 50 mm | 84% | 4.3 m/s | 5.6 |
| 2023 🔥 | 18.8°C | 16.1°C | 13.5°C | 23.3°C | 10.1°C | 51 mm | 81% | 3.3 m/s | 6 |
| 2022 | 15.8°C | 14.0°C | 12.1°C | 20.0°C | 9.8°C | 58 mm | 82% | 4.3 m/s | 5.7 |
| 2021 | 15.8°C | 13.9°C | 12.0°C | 19.8°C | 10.3°C | 31 mm | 85% | 3.7 m/s | 5.7 |
| 2020 | 16.1°C | 14.1°C | 12.1°C | 24.3°C | 7.8°C | 118 mm | 83% | 4.5 m/s | 4.7 |
| 2019 | 15.1°C | 13.3°C | 11.5°C | 20.9°C | 9.9°C | 106 mm | 84% | 4.4 m/s | 5.5 |
| 2018 | 17.9°C | 15.4°C | 12.8°C | 24.9°C | 10.3°C | 23 mm | 79% | 3.2 m/s | 6.3 |
| 2017 | 15.9°C | 14.2°C | 12.5°C | 22.1°C | 10.6°C | 172 mm | 87% | 5.1 m/s | 5.1 |
| 2016 | 16.1°C | 14.4°C | 12.6°C | 22.2°C | 9.4°C | 112 mm | 86% | 3.2 m/s | 5.2 |
| 2015 | 14.7°C | 12.8°C | 10.8°C | 21.5°C | 8.0°C | 47 mm | 83% | 4.4 m/s | 5.9 |
| 2014 | 15.9°C | 14.1°C | 12.2°C | 18.0°C | 9.9°C | 40 mm | 83% | 3.2 m/s | 6.1 |
| 2013 | 15.1°C | 13.0°C | 10.9°C | 18.0°C | 8.6°C | 66 mm | 84% | 3.9 m/s | 5.6 |
| 2012 🌧️ | 14.5°C | 12.9°C | 11.3°C | 17.4°C | 8.0°C | 204 mm | 85% | 4.6 m/s | 4.6 |
| 2011 | 14.6°C | 12.9°C | 11.1°C | 19.8°C | 7.6°C | 99 mm | 83% | 4.3 m/s | 5.6 |
| 2010 | 15.9°C | 14.0°C | 12.0°C | 19.7°C | 10.3°C | 42 mm | 83% | 3.1 m/s | 6 |
| 2009 | 16.4°C | 14.1°C | 11.7°C | 21.7°C | 8.2°C | 57 mm | 81% | 3.4 m/s | 5.8 |
| 2008 | 14.6°C | 13.0°C | 11.3°C | 17.3°C | 9.6°C | 101 mm | 84% | 4.4 m/s | 5.4 |
| 2007 | 16.2°C | 14.3°C | 12.4°C | 21.1°C | 10.5°C | 123 mm | 85% | 3.8 m/s | 5 |
| 2006 | 16.2°C | 14.4°C | 12.6°C | 21.7°C | 9.8°C | 44 mm | 83% | 3.2 m/s | 5.6 |
| 2005 | 15.7°C | 13.9°C | 12.1°C | 20.5°C | 9.7°C | 54 mm | 86% | 4 m/s | 5.2 |
| 2004 | 15.1°C | 13.5°C | 11.8°C | 20.2°C | 9.5°C | 76 mm | 86% | 4.4 m/s | 5.4 |
| 2003 | 15.8°C | 14.0°C | 12.2°C | 19.8°C | 10.8°C | 73 mm | 84% | 4.1 m/s | 5.5 |
| 2002 | 14.1°C | 12.6°C | 11.1°C | 16.9°C | 9.4°C | 79 mm | 86% | 5.2 m/s | 5.2 |
| 2001 | 14.5°C | 12.8°C | 11.2°C | 21.2°C | 7.5°C | 42 mm | 84% | 4 m/s | 5.5 |
| 2000 | 15.1°C | 13.4°C | 11.8°C | 21.3°C | 9.5°C | 80 mm | 85% | 4.2 m/s | 4.9 |
| 1999 | 14.2°C | 12.7°C | 11.1°C | 19.4°C | 8.7°C | 76 mm | 83% | 3.9 m/s | 5.5 |
| 1998 | 14.6°C | 13.1°C | 11.6°C | 20.4°C | 8.7°C | 159 mm | 87% | 5.1 m/s | 4.9 |
| 1997 | 14.8°C | 12.9°C | 11.1°C | 18.0°C | 9.1°C | 119 mm | 83% | 5 m/s | 4.8 |
| 1996 | 14.6°C | 12.7°C | 10.7°C | 20.4°C | 8.9°C | 40 mm | 83% | 4.1 m/s | 5.7 |
| 1995 | 15.2°C | 13.1°C | 11.0°C | 24.6°C | 8.6°C | 32 mm | 82% | 4.1 m/s | 5.9 |
| 1994 | 14.0°C | 12.3°C | 10.6°C | 18.9°C | 7.9°C | 57 mm | 86% | 4.7 m/s | 4.9 |
| 1993 | 15.1°C | 13.4°C | 11.6°C | 21.1°C | 9.7°C | 106 mm | 86% | 3.3 m/s | 4.9 |
| 1992 | 16.4°C | 14.3°C | 12.1°C | 21.3°C | 9.5°C | 50 mm | 82% | 3.2 m/s | 5.2 |
| 1991 ❄️ | 13.2°C | 11.6°C | 10.0°C | 15.5°C | 6.8°C | 75 mm | 84% | 5 m/s | 5 |
| 1990 | 14.5°C | 12.8°C | 11.1°C | 16.8°C | 9.3°C | 85 mm | 84% | 4.5 m/s | 5.1 |
| 1989 | 15.2°C | 13.2°C | 11.1°C | 23.7°C | 7.1°C | 68 mm | 79% | 3.8 m/s | 5.6 |
| 1988 | 15.9°C | 13.7°C | 11.5°C | 19.7°C | 8.6°C | 34 mm | 82% | 3.2 m/s | 5.8 |
| 1987 | 13.0°C | 11.7°C | 10.3°C | 15.7°C | 7.8°C | 110 mm | 85% | 4 m/s | 4.4 |
| 1986 | 15.5°C | 13.2°C | 10.9°C | 23.9°C | 7.9°C | 50 mm | 83% | 4.1 m/s | 4.8 |
| 1985 | 13.6°C | 11.7°C | 9.8°C | 18.9°C | 7.2°C | 109 mm | 82% | 4.2 m/s | 5.2 |
| 1984 | 15.0°C | 13.0°C | 11.0°C | 19.7°C | 7.3°C | 37 mm | 83% | 3.4 m/s | 5.3 |
| 1983 | 14.8°C | 12.7°C | 10.6°C | 19.6°C | 7.1°C | 43 mm | 84% | 3.6 m/s | — |
| 1982 | 16.2°C | 14.0°C | 11.9°C | 21.9°C | 9.8°C | 71 mm | 83% | 3.2 m/s | — |
| 1981 | 13.8°C | 12.4°C | 10.9°C | 16.7°C | 9.7°C | 72 mm | 85% | 5.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 15.3°C with lows near 11.5°C (mean 13.4°C), based on 45 years of NASA POWER data.
June averages 77 mm of rainfall in Bangor, one of the drier months. The wettest on record was 204 mm in 2012.
The hottest June reached 24.9°C in 2018. The coldest dipped to 6.8°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.6°C. Daytime highs moved from 14.7°C to 16.3°C and overnight lows from 10.8°C to 12.4°C over the same span.
June is one of the warmer months of the year in Bangor and one of the drier months, so plan for around 15.3°C daytime highs and 11.5°C at night.
Not quite — June is the 9th coolest month in Bangor, averaging 13.4°C.
For June in Bangor, pack light layers you can adjust through the day, with typical highs of 15.3°C and lows of 11.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 84% — quite humid.
Average wind speed in June is 4.1 m/s. The windiest June on record averaged 5.2 m/s (2002).
The wettest June on record was 2012 with 204 mm. On average, June sees 77 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 Bangor 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.
