June is one of the cooler months of the year in Seymour, with average highs near 12.7°C and lows around 3.9°C (mean 8.3°C). It is a relatively wet time of year, averaging 63 mm of rainfall and 87% relative humidity across the period.
June is one of the cooler months of the year in Seymour. Across 45 years of records, the warmest June in Seymour was 2008 — when the month averaged 10.1°C — while the coldest was 1982 at 6.6°C. Typical June days reach 12.7°C with nights near 3.9°C. The long-term trend is warming, about 0.3°C per decade.
June is a relatively wet time of year in Seymour, averaging 63 mm of rainfall. The wettest June on record was 1991 with 149 mm, while the driest was 2017 at 7 mm.
Relative humidity in Seymour during June averages 87%. The most humid Junes were 1983 and 1989 at 91%, and the least humid was 2005 at 81%.
June receives about 1.8 kWh/m²/day of solar energy in Seymour. The sunniest June was 1984 at 2.1 kWh/m²/day, and the cloudiest were 1991, 2004 and 2014 at 1.5.
Average wind speed in Seymour during June is 2 m/s. The windiest Junes were 1995 and 2004 at 2.5 m/s, while the calmest was 2017 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.5°C | 8.2°C | 8.8°C | 8.5°C | 8.4°C | +0.9°C |
| Avg High | 11.9°C | 12.4°C | 13.3°C | 13.1°C | 12.8°C | +0.9°C |
| Avg Low | 3.2°C | 4.1°C | 4.2°C | 4.0°C | 4.0°C | +0.8°C |
| Avg Rain | 68 mm | 80 mm | 59 mm | 54 mm | 47 mm | -21 mm |
June temperatures in Seymour have risen by about 1.2°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -2.4°C (1982) to a record high of 21.1°C (2005).
Rainfall in June is a relatively wet time of year, averaging 63 mm, with a wettest year of 149 mm.
A quieter season to visit Seymour
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Seymour. That said, June — with days averaging 12.7°C and nights around 3.9°C (mean 8.3°C) and moderate rainfall (63 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 | 12.7°C | 8.1°C | 3.4°C | 17.4°C | -1.3°C | 44 mm | 82% | 2.1 m/s | 1.9 |
| 2024 | 13.0°C | 8.4°C | 3.7°C | 16.8°C | -0.5°C | 20 mm | 84% | 2 m/s | 1.8 |
| 2023 | 13.0°C | 8.8°C | 4.6°C | 18.9°C | 0.1°C | 85 mm | 86% | 2.3 m/s | 1.7 |
| 2022 | 12.2°C | 8.0°C | 3.9°C | 15.5°C | 0.6°C | 47 mm | 88% | 2.1 m/s | 1.6 |
| 2021 | 13.2°C | 8.9°C | 4.6°C | 18.3°C | 0.4°C | 62 mm | 86% | 2.1 m/s | 1.6 |
| 2020 | 12.8°C | 8.2°C | 3.7°C | 14.9°C | -0.2°C | 26 mm | 88% | 1.8 m/s | 2 |
| 2019 | 13.7°C | 8.9°C | 4.2°C | 16.9°C | -0.3°C | 49 mm | 86% | 2.1 m/s | 2 |
| 2018 | 13.3°C | 8.7°C | 4.0°C | 17.3°C | 0.5°C | 45 mm | 83% | 2.1 m/s | 1.9 |
| 2017 | 14.1°C | 8.8°C | 3.5°C | 17.0°C | 0.2°C | 7 mm | 84% | 1.4 m/s | 1.9 |
| 2016 | 11.8°C | 7.8°C | 3.8°C | 17.1°C | -1.0°C | 74 mm | 90% | 2 m/s | 1.6 |
| 2015 | 13.1°C | 8.4°C | 3.7°C | 16.7°C | -0.9°C | 29 mm | 85% | 1.8 m/s | 1.9 |
| 2014 | 12.9°C | 9.2°C | 5.4°C | 16.2°C | 2.6°C | 98 mm | 91% | 2.4 m/s | 1.5 |
| 2013 | 13.5°C | 8.8°C | 4.1°C | 16.0°C | -0.1°C | 63 mm | 86% | 2 m/s | 1.9 |
| 2012 | 12.3°C | 8.0°C | 3.7°C | 16.2°C | -1.0°C | 68 mm | 88% | 2.2 m/s | 1.7 |
| 2011 | 13.6°C | 8.7°C | 3.8°C | 18.6°C | -0.1°C | 37 mm | 86% | 2.2 m/s | 2 |
| 2010 | 12.3°C | 8.1°C | 4.0°C | 16.5°C | -1.3°C | 73 mm | 87% | 2 m/s | 1.8 |
| 2009 | 13.1°C | 8.9°C | 4.6°C | 18.9°C | 0.2°C | 70 mm | 87% | 1.9 m/s | 1.7 |
| 2008 🔥 | 14.6°C | 10.1°C | 5.5°C | 18.0°C | 3.0°C | 34 mm | 83% | 2.3 m/s | 1.7 |
| 2007 | 12.1°C | 7.8°C | 3.5°C | 15.4°C | -0.3°C | 40 mm | 88% | 2.3 m/s | 1.9 |
| 2006 | 12.9°C | 7.8°C | 2.6°C | 15.3°C | -1.5°C | 22 mm | 82% | 1.7 m/s | 1.9 |
| 2005 | 14.5°C | 9.7°C | 4.8°C | 21.1°C | 0.9°C | 98 mm | 81% | 2.1 m/s | 1.9 |
| 2004 | 12.5°C | 8.2°C | 3.8°C | 18.3°C | 0.7°C | 82 mm | 85% | 2.5 m/s | 1.5 |
| 2003 | 13.3°C | 9.0°C | 4.7°C | 18.3°C | 1.4°C | 72 mm | 87% | 2 m/s | 1.6 |
| 2002 | 13.3°C | 8.7°C | 4.1°C | 17.5°C | 1.1°C | 68 mm | 83% | 2.4 m/s | 1.8 |
| 2001 | 14.0°C | 9.4°C | 4.9°C | 18.8°C | 1.6°C | 56 mm | 85% | 2 m/s | 1.7 |
| 2000 | 12.3°C | 8.0°C | 3.7°C | 14.2°C | 0.0°C | 53 mm | 89% | 2.1 m/s | 1.6 |
| 1999 | 13.0°C | 8.4°C | 3.9°C | 16.2°C | -0.3°C | 57 mm | 88% | 1.9 m/s | 1.9 |
| 1998 | 12.5°C | 8.2°C | 3.9°C | 19.0°C | -0.4°C | 58 mm | 85% | 2.3 m/s | 1.7 |
| 1997 | 12.8°C | 8.5°C | 4.1°C | 16.4°C | 1.6°C | 43 mm | 86% | 2.1 m/s | 1.9 |
| 1996 | 12.5°C | 8.3°C | 4.1°C | 15.3°C | 0.6°C | 128 mm | 89% | 1.9 m/s | 1.7 |
| 1995 | 11.5°C | 7.8°C | 4.2°C | 15.6°C | -2.3°C | 130 mm | 90% | 2.5 m/s | 1.7 |
| 1994 | 12.7°C | 8.3°C | 3.8°C | 19.0°C | -1.4°C | 76 mm | 87% | 2 m/s | 1.9 |
| 1993 | 12.0°C | 7.8°C | 3.7°C | 14.5°C | 0.0°C | 33 mm | 88% | 2.1 m/s | 1.7 |
| 1992 | 11.3°C | 7.3°C | 3.3°C | 15.1°C | -0.2°C | 59 mm | 91% | 2 m/s | 1.8 |
| 1991 🌧️ | 13.4°C | 9.8°C | 6.2°C | 16.3°C | 0.7°C | 149 mm | 89% | 2.1 m/s | 1.5 |
| 1990 | 12.1°C | 7.7°C | 3.3°C | 16.1°C | 0.6°C | 68 mm | 88% | 2.1 m/s | 1.8 |
| 1989 | 11.3°C | 7.4°C | 3.6°C | 13.6°C | -1.1°C | 96 mm | 91% | 2 m/s | 1.7 |
| 1988 | 12.6°C | 8.6°C | 4.6°C | 16.4°C | 1.5°C | 97 mm | 91% | 2.2 m/s | 1.8 |
| 1987 | 13.1°C | 8.7°C | 4.3°C | 17.2°C | 1.1°C | 106 mm | 89% | 1.8 m/s | 1.7 |
| 1986 | 11.2°C | 6.9°C | 2.5°C | 15.1°C | -2.0°C | 31 mm | 90% | 1.7 m/s | 1.8 |
| 1985 | 11.2°C | 6.9°C | 2.6°C | 16.0°C | -0.8°C | 45 mm | 89% | 1.8 m/s | 1.8 |
| 1984 | 13.5°C | 8.5°C | 3.4°C | 18.1°C | -1.2°C | 26 mm | 84% | 2 m/s | 2.1 |
| 1983 | 11.3°C | 7.1°C | 3.0°C | 15.4°C | -1.9°C | 56 mm | 91% | 1.7 m/s | — |
| 1982 ❄️ | 11.6°C | 6.6°C | 1.6°C | 15.6°C | -2.4°C | 35 mm | 86% | 1.8 m/s | — |
| 1981 | 11.0°C | 7.1°C | 3.2°C | 14.5°C | 0.2°C | 120 mm | 90% | 2.3 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 12.7°C with lows near 3.9°C (mean 8.3°C), based on 45 years of NASA POWER data.
June averages 63 mm of rainfall in Seymour, a relatively wet time of year. The wettest on record was 149 mm in 1991.
The hottest June reached 21.1°C in 2005. The coldest dipped to -2.4°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.2°C. Daytime highs moved from 11.7°C to 12.8°C and overnight lows from 2.8°C to 4°C over the same span.
June is one of the cooler months of the year in Seymour and a relatively wet time of year, so plan for around 12.7°C daytime highs and 3.9°C at night.
Not quite — June is the 2nd coolest month in Seymour, averaging 8.3°C.
For June in Seymour, pack warm layers and a jacket for chilly mornings, with typical highs of 12.7°C and lows of 3.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 87% — quite humid.
Average wind speed in June is 2 m/s. The windiest June on record averaged 2.5 m/s (1995).
The wettest June on record was 1991 with 149 mm. On average, June sees 63 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 Seymour 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.
