June is one of the warmer months of the year in Truro, with average highs near 16.3°C and lows around 12.6°C (mean 14.5°C). It is one of the drier months, averaging 70 mm of rainfall and 83% 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 2023 — when the month averaged 17°C — while the coldest was 1991 at 12.8°C. Typical June days reach 16.3°C with nights near 12.6°C. The long-term trend is warming, about 0.4°C per decade.
June is one of the drier months in Truro, averaging 70 mm of rainfall. The wettest June on record was 2020 with 157 mm, while the driest was 1984 at 16 mm.
Relative humidity in Truro during June averages 83%. The most humid June was 1998 at 86%, and the least humid was 1989 at 79%.
June receives about 5.7 kWh/m²/day of solar energy in Truro. The sunniest June was 2010 at 6.8 kWh/m²/day, and the cloudiest was 1997 at 4.6.
Average wind speed in Truro during June is 5 m/s. The windiest Junes were 1997 and 1998 at 6.3 m/s, while the calmest was 2006 at 3.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.0°C | 13.9°C | 14.6°C | 14.6°C | 15.4°C | +1.4°C |
| Avg High | 15.9°C | 15.7°C | 16.4°C | 16.4°C | 17.3°C | +1.4°C |
| Avg Low | 12.1°C | 12.1°C | 12.8°C | 12.8°C | 13.5°C | +1.4°C |
| Avg Rain | 67 mm | 71 mm | 56 mm | 81 mm | 78 mm | +11 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 8.2°C (1989) to a record high of 25.3°C (1995).
Rainfall in June is one of the drier months, averaging 70 mm, with a wettest year of 157 mm.
One of the best times to visit Truro
June is one of the best times to visit Truro. Expect days averaging 16.3°C and nights around 12.6°C (mean 14.5°C) — warmer than Truro's yearly average — with moderate rainfall (70 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 | 18.0°C | 16.2°C | 14.5°C | 22.7°C | 11.8°C | 96 mm | 85% | 5 m/s | 5.6 |
| 2024 | 16.1°C | 14.5°C | 12.9°C | 20.6°C | 11.2°C | 32 mm | 81% | 4.8 m/s | 6.1 |
| 2023 🔥 | 19.4°C | 17.0°C | 14.7°C | 23.1°C | 10.5°C | 47 mm | 82% | 4.2 m/s | 6.3 |
| 2022 | 17.1°C | 15.2°C | 13.2°C | 21.3°C | 11.1°C | 70 mm | 80% | 5 m/s | 6 |
| 2021 | 16.9°C | 14.9°C | 12.9°C | 21.4°C | 10.7°C | 65 mm | 84% | 4.1 m/s | 5.8 |
| 2020 🌧️ | 16.5°C | 14.6°C | 12.7°C | 23.7°C | 9.7°C | 157 mm | 84% | 5.5 m/s | 5.1 |
| 2019 | 15.8°C | 14.2°C | 12.6°C | 20.9°C | 10.1°C | 114 mm | 84% | 5.4 m/s | 5.3 |
| 2018 | 18.4°C | 16.2°C | 13.9°C | 22.4°C | 11.4°C | 18 mm | 81% | 4.1 m/s | 6.1 |
| 2017 | 17.1°C | 15.3°C | 13.6°C | 24.1°C | 11.6°C | 104 mm | 84% | 5.8 m/s | 5.5 |
| 2016 | 16.6°C | 15.0°C | 13.5°C | 18.4°C | 11.1°C | 97 mm | 85% | 4.6 m/s | 5.2 |
| 2015 | 15.9°C | 14.0°C | 12.0°C | 22.3°C | 8.9°C | 59 mm | 83% | 5.4 m/s | 6.2 |
| 2014 | 17.1°C | 15.2°C | 13.3°C | 19.7°C | 10.2°C | 65 mm | 82% | 4.5 m/s | 6.7 |
| 2013 | 15.4°C | 13.7°C | 11.9°C | 18.0°C | 9.7°C | 55 mm | 85% | 5.7 m/s | 5.7 |
| 2012 | 15.2°C | 13.8°C | 12.3°C | 18.0°C | 10.5°C | 152 mm | 85% | 6.2 m/s | 4.8 |
| 2011 | 15.3°C | 13.7°C | 12.1°C | 19.4°C | 9.9°C | 96 mm | 82% | 6 m/s | 5.9 |
| 2010 | 17.2°C | 15.1°C | 13.1°C | 20.8°C | 11.4°C | 47 mm | 83% | 4.1 m/s | 6.8 |
| 2009 | 17.1°C | 15.1°C | 13.0°C | 21.5°C | 8.9°C | 33 mm | 82% | 3.9 m/s | 6.2 |
| 2008 | 15.8°C | 14.1°C | 12.5°C | 17.3°C | 10.9°C | 42 mm | 82% | 5.4 m/s | 6.2 |
| 2007 | 16.8°C | 15.1°C | 13.5°C | 21.0°C | 11.5°C | 116 mm | 85% | 5 m/s | 5.1 |
| 2006 | 17.5°C | 15.4°C | 13.3°C | 20.4°C | 9.4°C | 40 mm | 82% | 3.6 m/s | 6.4 |
| 2005 | 16.9°C | 15.0°C | 13.0°C | 20.7°C | 9.6°C | 61 mm | 86% | 4.7 m/s | 5.8 |
| 2004 | 16.6°C | 15.0°C | 13.3°C | 20.8°C | 11.0°C | 61 mm | 83% | 5.2 m/s | 6.1 |
| 2003 | 16.9°C | 15.0°C | 13.1°C | 19.8°C | 11.4°C | 76 mm | 84% | 5.1 m/s | 5.8 |
| 2002 | 14.5°C | 13.1°C | 11.7°C | 17.3°C | 10.0°C | 55 mm | 86% | 5.5 m/s | 5.2 |
| 2001 | 16.1°C | 14.3°C | 12.5°C | 22.1°C | 9.8°C | 41 mm | 82% | 4.7 m/s | 6.1 |
| 2000 | 15.9°C | 14.2°C | 12.4°C | 20.2°C | 10.2°C | 35 mm | 85% | 5.2 m/s | 5.3 |
| 1999 | 15.3°C | 13.7°C | 12.1°C | 19.2°C | 10.0°C | 101 mm | 83% | 4.7 m/s | 5.7 |
| 1998 | 15.5°C | 13.9°C | 12.4°C | 19.6°C | 9.6°C | 110 mm | 86% | 6.3 m/s | 5.3 |
| 1997 | 15.5°C | 13.8°C | 12.2°C | 17.4°C | 10.5°C | 129 mm | 85% | 6.3 m/s | 4.6 |
| 1996 | 16.0°C | 14.0°C | 11.9°C | 21.0°C | 9.7°C | 26 mm | 82% | 4.6 m/s | 5.9 |
| 1995 | 16.3°C | 14.2°C | 12.2°C | 25.3°C | 9.8°C | 23 mm | 83% | 4.8 m/s | 6.2 |
| 1994 | 15.4°C | 13.5°C | 11.7°C | 19.1°C | 9.5°C | 32 mm | 85% | 5.5 m/s | 6.1 |
| 1993 | 16.2°C | 14.3°C | 12.4°C | 20.2°C | 11.2°C | 88 mm | 85% | 4.7 m/s | 5.7 |
| 1992 | 17.2°C | 14.9°C | 12.7°C | 20.7°C | 10.8°C | 18 mm | 81% | 4.3 m/s | 5.8 |
| 1991 ❄️ | 14.3°C | 12.8°C | 11.2°C | 17.1°C | 8.9°C | 103 mm | 85% | 6.1 m/s | 5.3 |
| 1990 | 15.5°C | 13.8°C | 12.1°C | 18.5°C | 11.0°C | 77 mm | 82% | 5.8 m/s | 5.2 |
| 1989 | 16.7°C | 14.6°C | 12.5°C | 23.8°C | 8.2°C | 41 mm | 79% | 4.7 m/s | 6.1 |
| 1988 | 16.7°C | 14.6°C | 12.5°C | 19.4°C | 9.6°C | 44 mm | 84% | 4.4 m/s | 6 |
| 1987 | 14.6°C | 13.0°C | 11.5°C | 18.5°C | 8.8°C | 78 mm | 85% | 4.9 m/s | 5.1 |
| 1986 | 15.9°C | 13.8°C | 11.8°C | 21.5°C | 8.6°C | 118 mm | 85% | 4.7 m/s | 5.4 |
| 1985 | 14.9°C | 13.1°C | 11.4°C | 18.6°C | 9.3°C | 76 mm | 82% | 5.5 m/s | 5.6 |
| 1984 | 16.2°C | 14.2°C | 12.1°C | 23.3°C | 9.2°C | 16 mm | 83% | 4.2 m/s | 6.2 |
| 1983 | 15.8°C | 13.8°C | 11.9°C | 19.6°C | 10.0°C | 50 mm | 86% | 4.4 m/s | — |
| 1982 | 17.2°C | 15.2°C | 13.2°C | 20.9°C | 11.3°C | 119 mm | 83% | 4.7 m/s | — |
| 1981 | 14.9°C | 13.4°C | 11.9°C | 17.1°C | 10.4°C | 63 mm | 85% | 5.7 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 16.3°C with lows near 12.6°C (mean 14.5°C), based on 45 years of NASA POWER data.
June averages 70 mm of rainfall in Truro, one of the drier months. The wettest on record was 157 mm in 2020.
The hottest June reached 25.3°C in 1995. The coldest dipped to 8.2°C in 1989.
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 15.8°C to 17.5°C and overnight lows from 12.1°C to 13.6°C over the same span.
June is one of the warmer months of the year in Truro and one of the drier months, so plan for around 16.3°C daytime highs and 12.6°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 16.3°C and lows of 12.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 83% — quite humid.
Average wind speed in June is 5 m/s. The windiest June on record averaged 6.3 m/s (1997).
The wettest June on record was 2020 with 157 mm. On average, June sees 70 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.
