June is one of the cooler months of the year in Thames, with average highs near 14.6°C and lows around 10.5°C (mean 12.6°C). It is a relatively wet time of year, averaging 115 mm of rainfall and 85% relative humidity across the period.
June is one of the cooler months of the year in Thames. Across 45 years of records, the warmest June in Thames was 2002 — when the month averaged 14°C — while the coldest was 2009 at 10.8°C. Typical June days reach 14.6°C with nights near 10.5°C. The long-term trend is warming, about 0.2°C per decade.
June is a relatively wet time of year in Thames, averaging 115 mm of rainfall. The wettest June on record was 2025 with 218 mm, while the driest was 1994 at 22 mm.
Relative humidity in Thames during June averages 85%. The most humid June was 2023 at 89%, and the least humid was 1994 at 81%.
June receives about 1.9 kWh/m²/day of solar energy in Thames. The sunniest June was 2006 at 2.2 kWh/m²/day, and the cloudiest was 2002 at 1.5.
Average wind speed in Thames during June is 3 m/s. The windiest June was 2002 at 3.9 m/s, while the calmest were 1984 and 2001 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.4°C | 12.0°C | 12.6°C | 12.7°C | 13.4°C | +1°C |
| Avg High | 14.4°C | 14.1°C | 14.7°C | 14.7°C | 15.2°C | +0.8°C |
| Avg Low | 10.4°C | 9.8°C | 10.5°C | 10.6°C | 11.5°C | +1.1°C |
| Avg Rain | 112 mm | 91 mm | 100 mm | 109 mm | 193 mm | +81 mm |
June temperatures in Thames have risen by about 0.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 3.7°C (1994) to a record high of 19.2°C (2003).
Rainfall in June is a relatively wet time of year, averaging 115 mm, with a wettest year of 218 mm.
A quieter season to visit Thames
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Thames. That said, June — with days averaging 14.6°C and nights around 10.5°C (mean 12.6°C) and higher rainfall (115 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 15.3°C | 13.3°C | 11.4°C | 18.6°C | 6.9°C | 218 mm | 86% | 3 m/s | 1.9 |
| 2024 | 15.4°C | 13.4°C | 11.4°C | 17.7°C | 8.6°C | 143 mm | 87% | 2.6 m/s | 1.9 |
| 2023 | 14.6°C | 12.8°C | 11.0°C | 17.4°C | 6.3°C | 214 mm | 89% | 3 m/s | 2 |
| 2022 | 15.3°C | 13.6°C | 11.9°C | 18.6°C | 6.7°C | 212 mm | 87% | 3.2 m/s | 1.9 |
| 2021 | 15.5°C | 13.5°C | 11.6°C | 17.2°C | 5.4°C | 152 mm | 87% | 2.8 m/s | 1.7 |
| 2020 | 15.2°C | 13.5°C | 11.8°C | 17.6°C | 8.2°C | 216 mm | 87% | 3 m/s | 1.7 |
| 2019 | 14.8°C | 12.5°C | 10.2°C | 17.0°C | 7.1°C | 76 mm | 82% | 2.7 m/s | 2 |
| 2018 | 14.1°C | 12.1°C | 10.0°C | 17.2°C | 4.7°C | 150 mm | 86% | 3 m/s | 1.7 |
| 2017 | 14.4°C | 12.4°C | 10.4°C | 16.2°C | 6.6°C | 56 mm | 85% | 2.7 m/s | 2.1 |
| 2016 | 15.7°C | 13.6°C | 11.6°C | 18.5°C | 8.2°C | 119 mm | 84% | 3 m/s | 1.8 |
| 2015 | 14.5°C | 12.3°C | 10.2°C | 17.1°C | 4.0°C | 61 mm | 83% | 3.4 m/s | 2 |
| 2014 | 15.7°C | 13.8°C | 11.9°C | 17.8°C | 9.0°C | 188 mm | 85% | 3 m/s | 1.8 |
| 2013 | 14.2°C | 12.3°C | 10.4°C | 17.0°C | 5.5°C | 125 mm | 86% | 2.7 m/s | 1.7 |
| 2012 | 14.1°C | 11.8°C | 9.5°C | 18.2°C | 4.1°C | 59 mm | 82% | 3 m/s | 2 |
| 2011 | 15.2°C | 13.4°C | 11.6°C | 18.8°C | 6.3°C | 141 mm | 87% | 3.1 m/s | 1.7 |
| 2010 | 14.5°C | 12.4°C | 10.3°C | 17.4°C | 5.8°C | 117 mm | 85% | 3.2 m/s | 1.8 |
| 2009 ❄️ | 13.3°C | 10.8°C | 8.3°C | 16.8°C | 3.7°C | 107 mm | 84% | 2.8 m/s | 2 |
| 2008 | 15.0°C | 12.9°C | 10.8°C | 17.6°C | 6.3°C | 136 mm | 83% | 3.4 m/s | 1.9 |
| 2007 | 14.7°C | 12.7°C | 10.7°C | 17.5°C | 5.0°C | 75 mm | 83% | 3.5 m/s | 1.8 |
| 2006 | 13.4°C | 10.9°C | 8.4°C | 17.0°C | 4.6°C | 101 mm | 82% | 3 m/s | 2.2 |
| 2005 | 14.5°C | 12.3°C | 10.1°C | 16.1°C | 4.9°C | 102 mm | 84% | 3.2 m/s | 2 |
| 2004 | 14.9°C | 12.9°C | 10.9°C | 18.2°C | 7.4°C | 121 mm | 85% | 3.2 m/s | 1.8 |
| 2003 | 15.8°C | 13.7°C | 11.7°C | 19.2°C | 7.3°C | 105 mm | 86% | 3.1 m/s | 1.8 |
| 2002 🔥 | 15.8°C | 14.0°C | 12.2°C | 17.5°C | 9.7°C | 107 mm | 86% | 3.9 m/s | 1.5 |
| 2001 | 14.8°C | 12.6°C | 10.4°C | 17.8°C | 6.7°C | 52 mm | 82% | 2.5 m/s | 1.8 |
| 2000 | 14.9°C | 12.9°C | 11.0°C | 17.5°C | 6.0°C | 95 mm | 84% | 3.2 m/s | 1.8 |
| 1999 | 15.0°C | 12.9°C | 10.7°C | 18.5°C | 5.6°C | 88 mm | 83% | 2.6 m/s | 1.8 |
| 1998 | 15.5°C | 13.4°C | 11.3°C | 18.8°C | 6.7°C | 85 mm | 84% | 2.9 m/s | 1.6 |
| 1997 | 14.0°C | 11.7°C | 9.3°C | 16.8°C | 4.2°C | 154 mm | 85% | 2.9 m/s | 1.8 |
| 1996 | 13.6°C | 11.3°C | 9.0°C | 16.0°C | 4.9°C | 140 mm | 82% | 3.4 m/s | 1.8 |
| 1995 | 13.8°C | 12.0°C | 10.1°C | 17.0°C | 5.7°C | 125 mm | 86% | 3.4 m/s | 1.8 |
| 1994 | 14.0°C | 11.6°C | 9.2°C | 17.8°C | 3.7°C | 22 mm | 81% | 3.1 m/s | 2 |
| 1993 | 14.6°C | 12.9°C | 11.1°C | 17.5°C | 7.2°C | 24 mm | 83% | 3.5 m/s | 1.8 |
| 1992 | 13.3°C | 11.2°C | 9.1°C | 16.5°C | 4.3°C | 64 mm | 84% | 2.9 m/s | 2 |
| 1991 | 13.3°C | 11.1°C | 8.9°C | 17.2°C | 4.3°C | 112 mm | 85% | 3.4 m/s | 1.9 |
| 1990 | 13.9°C | 11.8°C | 9.7°C | 17.6°C | 5.3°C | 97 mm | 85% | 2.8 m/s | 1.9 |
| 1989 | 14.6°C | 12.6°C | 10.6°C | 17.7°C | 5.1°C | 112 mm | 84% | 3.1 m/s | 2 |
| 1988 | 14.8°C | 12.7°C | 10.7°C | 17.9°C | 6.8°C | 70 mm | 84% | 3 m/s | 1.8 |
| 1987 | 14.1°C | 12.1°C | 10.1°C | 16.0°C | 4.5°C | 93 mm | 84% | 2.7 m/s | 1.8 |
| 1986 | 14.1°C | 12.0°C | 9.9°C | 17.4°C | 4.3°C | 99 mm | 86% | 2.9 m/s | 2 |
| 1985 | 15.2°C | 13.3°C | 11.4°C | 17.3°C | 8.8°C | 147 mm | 87% | 2.6 m/s | 1.9 |
| 1984 | 14.7°C | 12.7°C | 10.6°C | 17.0°C | 5.7°C | 108 mm | 85% | 2.5 m/s | 1.8 |
| 1983 | 13.9°C | 11.7°C | 9.5°C | 17.1°C | 4.8°C | 119 mm | 86% | 3.4 m/s | — |
| 1982 | 13.5°C | 11.4°C | 9.4°C | 17.1°C | 6.3°C | 88 mm | 82% | 2.6 m/s | — |
| 1981 | 15.0°C | 13.1°C | 11.3°C | 18.2°C | 6.1°C | 169 mm | 88% | 2.9 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 14.6°C with lows near 10.5°C (mean 12.6°C), based on 45 years of NASA POWER data.
June averages 115 mm of rainfall in Thames, a relatively wet time of year. The wettest on record was 218 mm in 2025.
The hottest June reached 19.2°C in 2003. The coldest dipped to 3.7°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.9°C. Daytime highs moved from 14.5°C to 15.2°C and overnight lows from 10.4°C to 11.5°C over the same span.
June is one of the cooler months of the year in Thames and a relatively wet time of year, so plan for around 14.6°C daytime highs and 10.5°C at night.
Not quite — June is the 3rd coolest month in Thames, averaging 12.6°C.
For June in Thames, pack light layers you can adjust through the day, with typical highs of 14.6°C and lows of 10.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 85% — quite humid.
Average wind speed in June is 3 m/s. The windiest June on record averaged 3.9 m/s (2002).
The wettest June on record was 2025 with 218 mm. On average, June sees 115 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 Thames 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.
