June is one of the warmer months of the year in Moncton, with average highs near 20.5°C and lows around 9.5°C (mean 15°C). It is about average for rainfall, averaging 95 mm of rainfall and 82% relative humidity across the period.
June is one of the warmer months of the year in Moncton. Across 45 years of records, the warmest June in Moncton was 2021 — when the month averaged 17.7°C — while the coldest was 1986 at 13°C. Typical June days reach 20.5°C with nights near 9.5°C. The long-term trend is warming, about 0.2°C per decade.
June is about average for rainfall in Moncton, averaging 95 mm of rainfall. The wettest June on record was 2006 with 193 mm, while the driest was 1999 at 33 mm.
Relative humidity in Moncton during June averages 82%. The most humid June was 2023 at 87%, and the least humid was 1999 at 78%.
June receives about 5.5 kWh/m²/day of solar energy in Moncton. The sunniest Junes were 1988 and 1999 at 6.3 kWh/m²/day, and the cloudiest was 2023 at 4.2.
Average wind speed in Moncton during June is 0.1 m/s. The windiest Junes were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.5°C | 15.3°C | 15.1°C | 14.5°C | 16.2°C | +1.7°C |
| Avg High | 19.9°C | 21.1°C | 20.5°C | 19.7°C | 21.7°C | +1.8°C |
| Avg Low | 9.0°C | 9.4°C | 9.6°C | 9.2°C | 10.6°C | +1.6°C |
| Avg Rain | 108 mm | 76 mm | 92 mm | 112 mm | 80 mm | -28 mm |
June temperatures in Moncton have risen by about 1.5°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -2.6°C (2018) to a record high of 31.9°C (2025).
Rainfall in June is about average for rainfall, averaging 95 mm, with a wettest year of 193 mm.
One of the best times to visit Moncton
June is one of the best times to visit Moncton. Expect days averaging 20.5°C and nights around 9.5°C (mean 15°C) — warmer than Moncton's yearly average — with higher rainfall (95 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 | 22.2°C | 16.3°C | 10.5°C | 31.9°C | 6.2°C | 59 mm | 78% | 0.1 m/s | 5.9 |
| 2024 | 21.8°C | 16.4°C | 10.9°C | 31.0°C | 4.0°C | 95 mm | 83% | 0.1 m/s | 5.5 |
| 2023 | 19.7°C | 14.8°C | 9.8°C | 31.4°C | 4.0°C | 137 mm | 87% | 0.1 m/s | 4.2 |
| 2022 | 21.4°C | 15.9°C | 10.4°C | 28.9°C | 3.6°C | 87 mm | 81% | 0.1 m/s | 5.6 |
| 2021 🔥 | 23.4°C | 17.7°C | 11.9°C | 30.3°C | 4.5°C | 49 mm | 79% | 0.1 m/s | 5.9 |
| 2020 | 21.9°C | 16.1°C | 10.3°C | 30.7°C | 2.7°C | 54 mm | 80% | 0.1 m/s | 6 |
| 2019 | 20.3°C | 14.8°C | 9.2°C | 24.2°C | 3.8°C | 119 mm | 81% | 0.1 m/s | 5.7 |
| 2018 | 19.2°C | 13.2°C | 7.1°C | 27.9°C | -2.6°C | 127 mm | 79% | 0.1 m/s | 5.7 |
| 2017 | 20.6°C | 15.5°C | 10.3°C | 27.6°C | 3.4°C | 78 mm | 82% | 0.1 m/s | 5.4 |
| 2016 | 19.5°C | 14.2°C | 8.9°C | 26.0°C | 2.4°C | 84 mm | 82% | 0.1 m/s | 5.4 |
| 2015 | 18.1°C | 13.1°C | 8.1°C | 24.1°C | 2.4°C | 124 mm | 82% | 0.1 m/s | 5.2 |
| 2014 | 20.5°C | 15.1°C | 9.6°C | 29.4°C | 4.0°C | 134 mm | 82% | 0.1 m/s | 5.6 |
| 2013 | 20.1°C | 15.2°C | 10.2°C | 27.9°C | 4.9°C | 128 mm | 83% | 0.1 m/s | 5.1 |
| 2012 | 19.6°C | 14.6°C | 9.5°C | 27.7°C | 6.2°C | 89 mm | 84% | 0.1 m/s | 5.5 |
| 2011 | 19.0°C | 14.1°C | 9.1°C | 25.7°C | 4.6°C | 86 mm | 84% | 0.1 m/s | 4.8 |
| 2010 | 20.4°C | 15.2°C | 10.0°C | 26.7°C | 5.6°C | 154 mm | 83% | 0.1 m/s | 5 |
| 2009 | 20.4°C | 15.3°C | 10.2°C | 27.2°C | 3.5°C | 112 mm | 83% | 0.1 m/s | 5.1 |
| 2008 | 20.5°C | 15.4°C | 10.4°C | 27.4°C | 5.8°C | 86 mm | 84% | 0.1 m/s | 4.9 |
| 2007 | 20.4°C | 14.8°C | 9.1°C | 25.7°C | 3.2°C | 86 mm | 82% | 0.1 m/s | 6.1 |
| 2006 🌧️ | 21.3°C | 16.5°C | 11.7°C | 26.3°C | 6.3°C | 193 mm | 86% | 0.1 m/s | 4.6 |
| 2005 | 21.2°C | 15.2°C | 9.3°C | 29.3°C | 4.2°C | 60 mm | 82% | 0.1 m/s | 5.7 |
| 2004 | 18.7°C | 13.2°C | 7.8°C | 28.0°C | 2.3°C | 88 mm | 80% | 0.1 m/s | 5.5 |
| 2003 | 21.4°C | 15.5°C | 9.7°C | 30.8°C | 4.5°C | 92 mm | 81% | 0.1 m/s | 5.7 |
| 2002 | 18.8°C | 13.4°C | 8.0°C | 25.3°C | 2.3°C | 67 mm | 79% | 0.1 m/s | 5.7 |
| 2001 | 22.1°C | 16.5°C | 10.9°C | 30.5°C | 5.4°C | 73 mm | 81% | 0.1 m/s | 5.8 |
| 2000 | 20.4°C | 14.8°C | 9.2°C | 27.4°C | 2.2°C | 58 mm | 78% | 0.1 m/s | 5.9 |
| 1999 | 22.9°C | 16.9°C | 10.8°C | 27.5°C | 5.3°C | 33 mm | 78% | 0.1 m/s | 6.3 |
| 1998 | 20.2°C | 14.9°C | 9.5°C | 26.7°C | 3.7°C | 65 mm | 81% | 0.1 m/s | 5.1 |
| 1997 | 20.5°C | 14.4°C | 8.3°C | 29.7°C | 0.7°C | 80 mm | 81% | 0.1 m/s | 5.7 |
| 1996 | 21.1°C | 15.2°C | 9.4°C | 27.5°C | 2.1°C | 56 mm | 80% | 0.1 m/s | 5.9 |
| 1995 | 22.1°C | 15.8°C | 9.6°C | 29.3°C | 5.7°C | 79 mm | 79% | 0.1 m/s | 5.9 |
| 1994 | 21.6°C | 16.0°C | 10.4°C | 29.6°C | 3.4°C | 104 mm | 83% | 0.1 m/s | 5.1 |
| 1993 | 20.1°C | 14.4°C | 8.6°C | 28.2°C | 3.2°C | 153 mm | 82% | 0.1 m/s | 5 |
| 1992 | 20.3°C | 14.6°C | 8.8°C | 25.4°C | 2.1°C | 109 mm | 83% | 0.1 m/s | 5.4 |
| 1991 | 21.1°C | 15.0°C | 8.9°C | 27.2°C | 3.5°C | 46 mm | 79% | 0.1 m/s | 5.8 |
| 1990 | 21.4°C | 15.6°C | 9.8°C | 25.9°C | 4.0°C | 41 mm | 82% | 0.1 m/s | 5.6 |
| 1989 | 20.9°C | 15.5°C | 10.1°C | 27.1°C | 4.0°C | 74 mm | 83% | 0.1 m/s | 5 |
| 1988 | 19.2°C | 13.8°C | 8.3°C | 28.8°C | 3.0°C | 71 mm | 81% | 0.1 m/s | 6.3 |
| 1987 | 20.3°C | 14.8°C | 9.2°C | 25.9°C | 4.9°C | 119 mm | 81% | 0.1 m/s | 5.8 |
| 1986 ❄️ | 18.6°C | 13.0°C | 7.3°C | 24.4°C | 2.7°C | 64 mm | 79% | 0.1 m/s | 5.8 |
| 1985 | 19.3°C | 14.1°C | 8.9°C | 23.7°C | 5.8°C | 183 mm | 83% | 0.1 m/s | 5.1 |
| 1984 | 19.6°C | 14.4°C | 9.2°C | 28.6°C | 0.7°C | 149 mm | 83% | 0.1 m/s | 4.6 |
| 1983 | 21.6°C | 15.9°C | 10.2°C | 29.2°C | 6.0°C | 35 mm | 81% | 0.1 m/s | — |
| 1982 | 19.3°C | 14.0°C | 8.7°C | 24.6°C | 3.8°C | 133 mm | 81% | 0.1 m/s | — |
| 1981 | 20.6°C | 15.1°C | 9.5°C | 28.6°C | 5.1°C | 148 mm | 82% | 0.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 20.5°C with lows near 9.5°C (mean 15°C), based on 45 years of NASA POWER data.
June averages 95 mm of rainfall in Moncton, about average for rainfall. The wettest on record was 193 mm in 2006.
The hottest June reached 31.9°C in 2025. The coldest dipped to -2.6°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.5°C. Daytime highs moved from 20.1°C to 21.7°C and overnight lows from 9.3°C to 10.7°C over the same span.
June is one of the warmer months of the year in Moncton and about average for rainfall, so plan for around 20.5°C daytime highs and 9.5°C at night.
Not quite — June is the 10th coolest month in Moncton, averaging 15°C.
For June in Moncton, pack light layers you can adjust through the day, with typical highs of 20.5°C and lows of 9.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 82% — quite humid.
Average wind speed in June is 0.1 m/s. The windiest June on record averaged 0.1 m/s (1981).
The wettest June on record was 2006 with 193 mm. On average, June sees 95 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 Moncton 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.
