June is one of the warmer months of the year in St. John's, with average highs near 10.3°C and lows around 6.3°C (mean 8.3°C). It is one of the drier months, averaging 90 mm of rainfall and 90% relative humidity across the period.
June is one of the warmer months of the year in St. John's. Across 45 years of records, the warmest June in St. John's was 2024 — when the month averaged 10.7°C — while the coldest was 2018 at 5.5°C. Typical June days reach 10.3°C with nights near 6.3°C. The long-term trend is warming, about 0.2°C per decade.
June is one of the drier months in St. John's, averaging 90 mm of rainfall. The wettest June on record was 1981 with 144 mm, while the driest was 2025 at 40 mm.
Relative humidity in St. John's during June averages 90%. The most humid June was 2023 at 94%, and the least humid was 1986 at 87%.
June receives about 5.1 kWh/m²/day of solar energy in St. John's. The sunniest June was 2003 at 5.9 kWh/m²/day, and the cloudiest were 2011 and 2023 at 4.2.
Average wind speed in St. John's during June is 3.8 m/s. The windiest June was 1988 at 4.6 m/s, while the calmest was 2009 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.2°C | 7.8°C | 8.5°C | 7.8°C | 9.5°C | +1.3°C |
| Avg High | 10.3°C | 10.0°C | 10.6°C | 9.5°C | 11.6°C | +1.3°C |
| Avg Low | 6.3°C | 5.7°C | 6.4°C | 6.0°C | 7.4°C | +1.1°C |
| Avg Rain | 110 mm | 85 mm | 80 mm | 91 mm | 80 mm | -29 mm |
June temperatures in St. John's have risen by about 1.6°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 0.7°C (2018) to a record high of 20.3°C (2020).
Rainfall in June is one of the drier months, averaging 90 mm, with a wettest year of 144 mm.
One of the best times to visit St. John's
June is one of the best times to visit St. John's. Expect days averaging 10.3°C and nights around 6.3°C (mean 8.3°C) — warmer than St. John's's yearly average — with higher rainfall (90 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 | 12.4°C | 10.1°C | 7.7°C | 18.4°C | 4.8°C | 40 mm | 87% | 3.5 m/s | 5.8 |
| 2024 🔥 | 12.7°C | 10.7°C | 8.8°C | 17.8°C | 4.9°C | 115 mm | 91% | 3.8 m/s | 4.9 |
| 2023 | 8.5°C | 7.0°C | 5.5°C | 17.7°C | 3.5°C | 89 mm | 94% | 3.7 m/s | 4.2 |
| 2022 | 11.0°C | 9.1°C | 7.2°C | 18.6°C | 2.9°C | 71 mm | 91% | 4.1 m/s | 5.5 |
| 2021 | 12.7°C | 10.2°C | 7.7°C | 17.0°C | 2.6°C | 55 mm | 87% | 3.9 m/s | 5.7 |
| 2020 | 12.1°C | 9.9°C | 7.7°C | 20.3°C | 4.7°C | 113 mm | 92% | 3.6 m/s | 4.5 |
| 2019 | 9.0°C | 7.1°C | 5.2°C | 13.3°C | 1.7°C | 79 mm | 92% | 3.3 m/s | 4.9 |
| 2018 ❄️ | 7.5°C | 5.5°C | 3.6°C | 12.9°C | 0.7°C | 101 mm | 91% | 4.3 m/s | 4.8 |
| 2017 | 10.5°C | 8.3°C | 6.0°C | 16.4°C | 1.7°C | 69 mm | 89% | 3.7 m/s | 5.5 |
| 2016 | 10.1°C | 8.4°C | 6.6°C | 16.0°C | 2.4°C | 65 mm | 90% | 4.2 m/s | 4.9 |
| 2015 | 9.4°C | 7.6°C | 5.8°C | 14.9°C | 2.3°C | 92 mm | 88% | 3.8 m/s | 5.3 |
| 2014 | 9.9°C | 8.1°C | 6.2°C | 14.8°C | 1.2°C | 87 mm | 91% | 3.4 m/s | 5.3 |
| 2013 | 11.1°C | 9.0°C | 7.0°C | 16.3°C | 3.5°C | 132 mm | 90% | 4.1 m/s | 4.6 |
| 2012 | 9.2°C | 7.9°C | 6.5°C | 15.2°C | 3.1°C | 64 mm | 93% | 3.9 m/s | 5.2 |
| 2011 | 8.8°C | 7.7°C | 6.6°C | 13.5°C | 3.3°C | 92 mm | 94% | 4.2 m/s | 4.2 |
| 2010 | 9.9°C | 7.9°C | 6.0°C | 14.9°C | 2.6°C | 130 mm | 89% | 4 m/s | 4.9 |
| 2009 | 11.8°C | 9.8°C | 7.8°C | 19.8°C | 4.1°C | 68 mm | 88% | 3.2 m/s | 5.4 |
| 2008 | 9.9°C | 8.4°C | 7.0°C | 17.0°C | 3.9°C | 108 mm | 93% | 3.5 m/s | 4.4 |
| 2007 | 10.5°C | 8.5°C | 6.4°C | 17.5°C | 1.0°C | 54 mm | 91% | 3.9 m/s | 5 |
| 2006 | 12.3°C | 10.3°C | 8.4°C | 18.6°C | 4.0°C | 114 mm | 93% | 4 m/s | 4.8 |
| 2005 | 10.2°C | 8.1°C | 6.0°C | 15.5°C | 3.2°C | 87 mm | 89% | 3.8 m/s | 4.9 |
| 2004 | 9.7°C | 7.7°C | 5.8°C | 14.8°C | 2.4°C | 55 mm | 88% | 3.6 m/s | 5.1 |
| 2003 | 9.6°C | 7.3°C | 5.0°C | 20.0°C | 2.4°C | 65 mm | 88% | 4 m/s | 5.9 |
| 2002 | 9.7°C | 7.6°C | 5.6°C | 15.2°C | 3.6°C | 92 mm | 89% | 3.8 m/s | 5.1 |
| 2001 | 10.6°C | 8.2°C | 5.8°C | 17.0°C | 1.4°C | 60 mm | 90% | 3.8 m/s | 5.1 |
| 2000 | 11.2°C | 8.9°C | 6.6°C | 16.6°C | 3.7°C | 95 mm | 87% | 3.7 m/s | 5 |
| 1999 | 12.2°C | 9.9°C | 7.6°C | 16.4°C | 3.5°C | 89 mm | 88% | 3.8 m/s | 5.6 |
| 1998 | 10.9°C | 8.9°C | 6.9°C | 16.9°C | 3.7°C | 86 mm | 90% | 3.6 m/s | 5.2 |
| 1997 | 8.9°C | 7.1°C | 5.3°C | 14.9°C | 1.5°C | 67 mm | 91% | 3.8 m/s | 4.9 |
| 1996 | 10.1°C | 7.9°C | 5.8°C | 12.8°C | 3.1°C | 86 mm | 88% | 3.7 m/s | 5.2 |
| 1995 | 10.1°C | 7.6°C | 5.1°C | 16.3°C | 1.5°C | 64 mm | 88% | 3.6 m/s | 5.2 |
| 1994 | 10.5°C | 8.1°C | 5.7°C | 15.9°C | 1.1°C | 62 mm | 89% | 3.8 m/s | 5.4 |
| 1993 | 8.7°C | 6.8°C | 4.9°C | 17.8°C | 2.6°C | 106 mm | 91% | 4.3 m/s | 4.6 |
| 1992 | 9.7°C | 7.8°C | 5.8°C | 15.0°C | 3.4°C | 90 mm | 92% | 3.7 m/s | 5.3 |
| 1991 | 8.6°C | 6.2°C | 3.8°C | 15.3°C | 1.5°C | 66 mm | 89% | 3.8 m/s | 5.1 |
| 1990 | 10.2°C | 8.0°C | 5.9°C | 15.7°C | 1.1°C | 132 mm | 92% | 4.2 m/s | 4.6 |
| 1989 | 11.2°C | 9.2°C | 7.3°C | 16.4°C | 3.1°C | 95 mm | 90% | 3.7 m/s | 4.9 |
| 1988 | 10.8°C | 8.7°C | 6.7°C | 16.5°C | 2.0°C | 142 mm | 91% | 4.6 m/s | 5 |
| 1987 | 9.9°C | 7.9°C | 5.8°C | 15.6°C | 3.0°C | 58 mm | 91% | 3.4 m/s | 5.2 |
| 1986 | 11.4°C | 9.1°C | 6.8°C | 15.0°C | 4.0°C | 94 mm | 87% | 4.2 m/s | 5.3 |
| 1985 | 9.3°C | 7.2°C | 5.2°C | 16.4°C | 1.6°C | 97 mm | 91% | 4 m/s | 5.6 |
| 1984 | 9.8°C | 7.9°C | 6.1°C | 13.3°C | 3.1°C | 120 mm | 91% | 4.1 m/s | 4.3 |
| 1983 | 11.1°C | 8.9°C | 6.8°C | 17.0°C | 2.3°C | 104 mm | 90% | 3.7 m/s | — |
| 1982 | 8.1°C | 6.3°C | 4.6°C | 13.4°C | 2.5°C | 134 mm | 90% | 4.1 m/s | — |
| 1981 🌧️ | 10.7°C | 8.9°C | 7.1°C | 14.9°C | 4.0°C | 144 mm | 90% | 4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 10.3°C with lows near 6.3°C (mean 8.3°C), based on 45 years of NASA POWER data.
June averages 90 mm of rainfall in St. John's, one of the drier months. The wettest on record was 144 mm in 1981.
The hottest June reached 20.3°C in 2020. The coldest dipped to 0.7°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.6°C. Daytime highs moved from 9.8°C to 11.5°C and overnight lows from 6°C to 7.4°C over the same span.
June is one of the warmer months of the year in St. John's and one of the drier months, so plan for around 10.3°C daytime highs and 6.3°C at night.
Not quite — June is the 8th coolest month in St. John's, averaging 8.3°C.
For June in St. John's, pack warm layers and a jacket for chilly mornings, with typical highs of 10.3°C and lows of 6.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 90% — quite humid.
Average wind speed in June is 3.8 m/s. The windiest June on record averaged 4.6 m/s (1988).
The wettest June on record was 1981 with 144 mm. On average, June sees 90 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 St. John's 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.
