June is one of the warmer months of the year in Truro, with average highs near 19.5°C and lows around 9.4°C (mean 14.5°C). It is about average for rainfall, averaging 85 mm of rainfall and 82% relative humidity across the period.
June is one of the warmer months of the year in Truro. Across 45 years of records, the warmest June in Truro was 2021 — when the month averaged 17°C — while the coldest was 2015 at 12.3°C. Typical June days reach 19.5°C with nights near 9.4°C. The long-term trend is warming, about 0.2°C per decade.
June is about average for rainfall in Truro, averaging 85 mm of rainfall. The wettest June on record was 2006 with 194 mm, while the driest was 1991 at 24 mm.
Relative humidity in Truro during June averages 82%. The most humid June was 2006 at 89%, and the least humid was 1987 at 76%.
June receives about 5.5 kWh/m²/day of solar energy in Truro. The sunniest June was 1999 at 6.2 kWh/m²/day, and the cloudiest were 2006 and 2011 at 4.5.
Average wind speed in Truro during June is 0.4 m/s. The windiest Junes were 2021, 2024 and 2025, among others at 0.5 m/s, while the calmest were 2020, 2022 and 2023, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.0°C | 14.7°C | 14.4°C | 13.8°C | 15.8°C | +1.8°C |
| Avg High | 19.1°C | 20.2°C | 19.4°C | 18.5°C | 20.9°C | +1.8°C |
| Avg Low | 9.0°C | 9.3°C | 9.4°C | 9.1°C | 10.7°C | +1.7°C |
| Avg Rain | 91 mm | 59 mm | 91 mm | 99 mm | 83 mm | -8 mm |
June temperatures in Truro have risen by about 1.7°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -0.2°C (2018) to a record high of 31.5°C (2025).
Rainfall in June is about average for rainfall, averaging 85 mm, with a wettest year of 194 mm.
One of the best times to visit Truro
June is one of the best times to visit Truro. Expect days averaging 19.5°C and nights around 9.4°C (mean 14.5°C) — warmer than Truro's yearly average — with higher rainfall (85 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 | 21.3°C | 15.8°C | 10.2°C | 31.5°C | 6.0°C | 65 mm | 78% | 0.5 m/s | 5.9 |
| 2024 | 20.5°C | 15.9°C | 11.4°C | 30.0°C | 4.8°C | 122 mm | 85% | 0.5 m/s | 5.3 |
| 2023 | 19.4°C | 14.8°C | 10.2°C | 26.4°C | 6.5°C | 90 mm | 86% | 0.4 m/s | 4.6 |
| 2022 | 19.9°C | 15.1°C | 10.2°C | 25.9°C | 4.1°C | 101 mm | 84% | 0.4 m/s | 5.6 |
| 2021 🔥 | 22.6°C | 17.0°C | 11.4°C | 29.9°C | 3.6°C | 63 mm | 80% | 0.5 m/s | 6.1 |
| 2020 | 21.8°C | 16.3°C | 10.8°C | 30.4°C | 3.8°C | 58 mm | 79% | 0.4 m/s | 5.6 |
| 2019 | 18.7°C | 14.0°C | 9.3°C | 24.0°C | 5.2°C | 120 mm | 83% | 0.4 m/s | 5.5 |
| 2018 | 17.8°C | 12.5°C | 7.2°C | 26.2°C | -0.2°C | 111 mm | 80% | 0.5 m/s | 5.6 |
| 2017 | 20.0°C | 15.1°C | 10.2°C | 26.6°C | 5.1°C | 74 mm | 84% | 0.5 m/s | 5.5 |
| 2016 | 17.8°C | 13.0°C | 8.3°C | 23.8°C | 1.2°C | 65 mm | 84% | 0.4 m/s | 5.7 |
| 2015 ❄️ | 16.8°C | 12.3°C | 7.8°C | 21.9°C | 3.1°C | 117 mm | 84% | 0.5 m/s | 5.4 |
| 2014 | 19.2°C | 14.3°C | 9.4°C | 27.7°C | 5.6°C | 102 mm | 83% | 0.4 m/s | 5.6 |
| 2013 | 19.7°C | 15.2°C | 10.7°C | 27.8°C | 6.7°C | 127 mm | 85% | 0.4 m/s | 4.9 |
| 2012 | 18.7°C | 14.0°C | 9.3°C | 26.4°C | 5.8°C | 56 mm | 84% | 0.4 m/s | 5.3 |
| 2011 | 17.1°C | 13.0°C | 9.0°C | 25.0°C | 3.9°C | 74 mm | 86% | 0.5 m/s | 4.5 |
| 2010 | 19.4°C | 14.5°C | 9.6°C | 24.7°C | 4.7°C | 141 mm | 83% | 0.4 m/s | 5 |
| 2009 | 19.5°C | 14.9°C | 10.3°C | 26.5°C | 5.9°C | 106 mm | 84% | 0.4 m/s | 5.3 |
| 2008 | 19.9°C | 14.9°C | 10.0°C | 25.3°C | 3.8°C | 77 mm | 85% | 0.4 m/s | 4.9 |
| 2007 | 18.8°C | 13.9°C | 8.9°C | 24.5°C | 2.8°C | 105 mm | 85% | 0.4 m/s | 5.2 |
| 2006 🌧️ | 20.2°C | 15.6°C | 11.1°C | 24.1°C | 7.9°C | 194 mm | 89% | 0.4 m/s | 4.5 |
| 2005 | 20.4°C | 14.8°C | 9.1°C | 27.1°C | 3.5°C | 60 mm | 82% | 0.4 m/s | 5.6 |
| 2004 | 17.6°C | 12.6°C | 7.7°C | 25.0°C | 1.8°C | 83 mm | 81% | 0.4 m/s | 5.9 |
| 2003 | 20.0°C | 14.7°C | 9.3°C | 28.7°C | 4.0°C | 70 mm | 82% | 0.4 m/s | 5.8 |
| 2002 | 17.4°C | 12.6°C | 7.9°C | 25.1°C | 1.0°C | 62 mm | 81% | 0.4 m/s | 5.3 |
| 2001 | 20.4°C | 15.4°C | 10.3°C | 27.5°C | 4.6°C | 85 mm | 82% | 0.4 m/s | 5.9 |
| 2000 | 19.6°C | 14.3°C | 9.1°C | 27.7°C | 1.7°C | 64 mm | 80% | 0.4 m/s | 5.7 |
| 1999 | 22.3°C | 16.6°C | 10.9°C | 28.8°C | 4.6°C | 34 mm | 77% | 0.4 m/s | 6.2 |
| 1998 | 18.5°C | 14.0°C | 9.5°C | 25.6°C | 3.2°C | 89 mm | 84% | 0.4 m/s | 5.1 |
| 1997 | 18.9°C | 13.4°C | 7.9°C | 27.7°C | 0.9°C | 64 mm | 82% | 0.4 m/s | 5.5 |
| 1996 | 20.2°C | 14.6°C | 8.9°C | 25.8°C | 3.0°C | 47 mm | 78% | 0.4 m/s | 6.1 |
| 1995 | 20.6°C | 14.6°C | 8.6°C | 26.7°C | 4.1°C | 97 mm | 78% | 0.4 m/s | 5.7 |
| 1994 | 21.5°C | 15.8°C | 10.2°C | 27.9°C | 3.0°C | 68 mm | 81% | 0.4 m/s | 5.8 |
| 1993 | 19.2°C | 14.0°C | 8.9°C | 27.2°C | 4.0°C | 69 mm | 81% | 0.4 m/s | 5.2 |
| 1992 | 19.8°C | 14.4°C | 8.9°C | 25.1°C | 1.6°C | 50 mm | 81% | 0.4 m/s | 5.9 |
| 1991 | 19.8°C | 14.3°C | 8.8°C | 26.0°C | 4.8°C | 24 mm | 77% | 0.5 m/s | 5.9 |
| 1990 | 21.1°C | 15.6°C | 10.1°C | 25.7°C | 4.4°C | 50 mm | 81% | 0.4 m/s | 5.6 |
| 1989 | 20.4°C | 15.4°C | 10.4°C | 27.5°C | 5.4°C | 68 mm | 82% | 0.4 m/s | 5.4 |
| 1988 | 18.4°C | 13.4°C | 8.3°C | 30.0°C | 1.6°C | 78 mm | 81% | 0.4 m/s | 5.6 |
| 1987 | 20.1°C | 14.5°C | 8.9°C | 25.6°C | 3.0°C | 90 mm | 76% | 0.4 m/s | 5.7 |
| 1986 | 18.3°C | 12.9°C | 7.5°C | 25.2°C | 2.5°C | 74 mm | 80% | 0.4 m/s | 5.4 |
| 1985 | 18.0°C | 13.4°C | 8.8°C | 22.3°C | 5.2°C | 160 mm | 85% | 0.4 m/s | 4.7 |
| 1984 | 18.6°C | 13.8°C | 9.1°C | 27.0°C | 2.1°C | 74 mm | 83% | 0.5 m/s | 5.4 |
| 1983 | 20.2°C | 15.2°C | 10.2°C | 28.1°C | 6.3°C | 37 mm | 82% | 0.4 m/s | — |
| 1982 | 18.0°C | 13.1°C | 8.3°C | 22.5°C | 3.5°C | 117 mm | 82% | 0.4 m/s | — |
| 1981 | 19.9°C | 14.7°C | 9.5°C | 29.1°C | 5.4°C | 119 mm | 82% | 0.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 19.5°C with lows near 9.4°C (mean 14.5°C), based on 45 years of NASA POWER data.
June averages 85 mm of rainfall in Truro, about average for rainfall. The wettest on record was 194 mm in 2006.
The hottest June reached 31.5°C in 2025. The coldest dipped to -0.2°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.7°C. Daytime highs moved from 18.9°C to 20.7°C and overnight lows from 9.2°C to 10.7°C over the same span.
June is one of the warmer months of the year in Truro and about average for rainfall, so plan for around 19.5°C daytime highs and 9.4°C at night.
Not quite — June is the 9th coolest month in Truro, averaging 14.5°C.
For June in Truro, pack light layers you can adjust through the day, with typical highs of 19.5°C and lows of 9.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 82% — quite humid.
Average wind speed in June is 0.4 m/s. The windiest June on record averaged 0.5 m/s (1984).
The wettest June on record was 2006 with 194 mm. On average, June sees 85 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 Truro 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.
