March is one of the warmer months of the year in Hamilton, with average highs near 21.7°C and lows around 14°C (mean 17.9°C). It is one of the drier months, averaging 84 mm of rainfall and 78% relative humidity across the period.
March is one of the warmer months of the year in Hamilton. Across 45 years of records, the warmest March in Hamilton was 2019 — when the month averaged 19.5°C — while the coldest were 1992 and 2004 at 15.8°C. Typical March days reach 21.7°C with nights near 14°C. The long-term March temperature trend is broadly flat.
March is one of the drier months in Hamilton, averaging 84 mm of rainfall. The wettest March on record was 1990 with 198 mm, while the driest was 2010 at 23 mm.
Relative humidity in Hamilton during March averages 78%. The most humid March was 2017 at 83%, and the least humid was 2013 at 74%.
March receives about 4.6 kWh/m²/day of solar energy in Hamilton. The sunniest Marchs were 2014 and 2025 at 5.1 kWh/m²/day, and the cloudiest were 1984, 1988 and 1997 at 4.1.
Average wind speed in Hamilton during March is 3.6 m/s. The windiest March was 1992 at 4.7 m/s, while the calmest was 1982 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.8°C | 17.5°C | 17.9°C | 18.3°C | 17.7°C | -0.1°C |
| Avg High | 21.6°C | 21.3°C | 21.8°C | 22.2°C | 21.6°C | 0°C |
| Avg Low | 14.0°C | 13.8°C | 14.1°C | 14.3°C | 13.7°C | -0.3°C |
| Avg Rain | 88 mm | 95 mm | 65 mm | 87 mm | 85 mm | -3 mm |
March temperatures in Hamilton have fallen by about 0.4°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 6.6°C (2010) to a record high of 27.2°C (2013).
Rainfall in March is one of the drier months, averaging 84 mm, with a wettest year of 198 mm.
One of the best times to visit Hamilton
March is one of the best times to visit Hamilton. Expect days averaging 21.7°C and nights around 14°C (mean 17.9°C) — warmer than Hamilton's yearly average — with higher rainfall (84 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 | 22.0°C | 17.9°C | 13.8°C | 24.0°C | 9.1°C | 39 mm | 77% | 3.3 m/s | 5.1 |
| 2024 | 19.9°C | 16.3°C | 12.7°C | 22.2°C | 7.6°C | 97 mm | 79% | 4.1 m/s | 4.6 |
| 2023 | 20.6°C | 17.0°C | 13.3°C | 23.9°C | 8.1°C | 79 mm | 80% | 3.4 m/s | 5 |
| 2022 | 23.4°C | 19.1°C | 14.8°C | 26.0°C | 11.2°C | 92 mm | 76% | 3.4 m/s | 4.9 |
| 2021 | 22.0°C | 18.1°C | 14.1°C | 24.0°C | 10.2°C | 118 mm | 77% | 3.3 m/s | 4.6 |
| 2020 | 21.6°C | 17.5°C | 13.4°C | 26.2°C | 9.0°C | 84 mm | 76% | 3.3 m/s | 4.7 |
| 2019 🔥 | 23.4°C | 19.5°C | 15.5°C | 26.2°C | 11.3°C | 68 mm | 79% | 2.9 m/s | 4.7 |
| 2018 | 22.7°C | 19.0°C | 15.2°C | 26.1°C | 11.9°C | 100 mm | 79% | 3.4 m/s | 4.6 |
| 2017 | 21.8°C | 18.4°C | 15.0°C | 25.3°C | 10.5°C | 184 mm | 83% | 3.7 m/s | 4.3 |
| 2016 | 22.9°C | 19.3°C | 15.7°C | 24.8°C | 9.7°C | 65 mm | 79% | 3.6 m/s | 4.6 |
| 2015 | 22.4°C | 18.5°C | 14.6°C | 25.8°C | 9.9°C | 81 mm | 77% | 3.3 m/s | 4.5 |
| 2014 | 21.4°C | 17.2°C | 12.9°C | 24.3°C | 9.9°C | 29 mm | 76% | 3.4 m/s | 5.1 |
| 2013 | 23.4°C | 19.0°C | 14.6°C | 27.2°C | 12.5°C | 33 mm | 74% | 2.9 m/s | 5 |
| 2012 | 20.7°C | 16.7°C | 12.7°C | 24.3°C | 9.0°C | 136 mm | 78% | 4.1 m/s | 4.4 |
| 2011 | 21.9°C | 17.9°C | 13.9°C | 24.3°C | 8.7°C | 156 mm | 78% | 3.4 m/s | 4.6 |
| 2010 | 21.4°C | 17.3°C | 13.3°C | 24.7°C | 6.6°C | 23 mm | 76% | 4 m/s | 4.7 |
| 2009 | 20.9°C | 17.1°C | 13.3°C | 25.6°C | 9.2°C | 53 mm | 77% | 3.8 m/s | 4.8 |
| 2008 | 22.9°C | 18.9°C | 14.8°C | 26.9°C | 12.3°C | 51 mm | 78% | 3.4 m/s | 4.5 |
| 2007 | 22.3°C | 18.5°C | 14.8°C | 25.3°C | 11.5°C | 130 mm | 79% | 4 m/s | 4.3 |
| 2006 | 21.0°C | 17.1°C | 13.2°C | 24.5°C | 8.7°C | 70 mm | 77% | 3.9 m/s | 4.4 |
| 2005 | 22.5°C | 18.7°C | 15.0°C | 25.2°C | 11.8°C | 99 mm | 76% | 3.2 m/s | 4.9 |
| 2004 | 19.6°C | 15.8°C | 12.0°C | 23.7°C | 8.3°C | 29 mm | 79% | 3.6 m/s | 5 |
| 2003 | 22.3°C | 18.5°C | 14.7°C | 25.3°C | 11.0°C | 103 mm | 79% | 3.4 m/s | 4.2 |
| 2002 | 22.0°C | 18.4°C | 14.7°C | 25.0°C | 12.1°C | 54 mm | 78% | 3.8 m/s | 4.3 |
| 2001 | 22.3°C | 18.4°C | 14.5°C | 24.7°C | 10.2°C | 36 mm | 75% | 2.9 m/s | 4.4 |
| 2000 | 22.5°C | 18.0°C | 13.5°C | 26.5°C | 8.1°C | 27 mm | 76% | 3.4 m/s | 4.6 |
| 1999 | 22.8°C | 19.3°C | 15.8°C | 25.4°C | 13.2°C | 63 mm | 80% | 3.7 m/s | 4.3 |
| 1998 | 22.7°C | 19.0°C | 15.4°C | 26.2°C | 12.4°C | 42 mm | 79% | 4 m/s | 4.5 |
| 1997 | 21.0°C | 17.5°C | 14.0°C | 26.2°C | 10.6°C | 88 mm | 79% | 3.8 m/s | 4.1 |
| 1996 | 20.5°C | 16.8°C | 13.0°C | 23.0°C | 9.0°C | 113 mm | 77% | 4 m/s | 4.7 |
| 1995 | 21.6°C | 18.1°C | 14.7°C | 26.7°C | 10.9°C | 142 mm | 79% | 3.7 m/s | 4.4 |
| 1994 | 20.7°C | 16.5°C | 12.3°C | 24.7°C | 8.0°C | 62 mm | 74% | 4.4 m/s | 5 |
| 1993 | 20.2°C | 16.4°C | 12.6°C | 24.5°C | 7.8°C | 79 mm | 78% | 3.8 m/s | 4.4 |
| 1992 ❄️ | 19.2°C | 15.8°C | 12.4°C | 23.6°C | 8.5°C | 87 mm | 79% | 4.7 m/s | 4.2 |
| 1991 | 21.3°C | 17.1°C | 13.0°C | 24.1°C | 10.2°C | 76 mm | 77% | 3.3 m/s | 4.8 |
| 1990 🌧️ | 22.6°C | 18.9°C | 15.2°C | 25.7°C | 7.9°C | 198 mm | 80% | 4.2 m/s | 4.4 |
| 1989 | 21.6°C | 18.1°C | 14.5°C | 25.0°C | 9.1°C | 52 mm | 78% | 3.6 m/s | 4.6 |
| 1988 | 20.4°C | 17.0°C | 13.6°C | 26.3°C | 10.7°C | 144 mm | 80% | 4.3 m/s | 4.1 |
| 1987 | 20.5°C | 16.6°C | 12.7°C | 22.4°C | 9.6°C | 146 mm | 77% | 4 m/s | 4.8 |
| 1986 | 22.1°C | 17.8°C | 13.5°C | 24.9°C | 8.7°C | 51 mm | 75% | 3.4 m/s | 5 |
| 1985 | 22.2°C | 17.9°C | 13.6°C | 25.6°C | 9.8°C | 90 mm | 77% | 4 m/s | 4.5 |
| 1984 | 21.6°C | 18.2°C | 14.8°C | 24.8°C | 11.5°C | 171 mm | 82% | 4 m/s | 4.1 |
| 1983 | 21.4°C | 17.6°C | 13.9°C | 24.4°C | 8.5°C | 47 mm | 79% | 4 m/s | — |
| 1982 | 21.7°C | 17.6°C | 13.6°C | 24.7°C | 9.0°C | 29 mm | 76% | 2.8 m/s | — |
| 1981 | 23.0°C | 19.3°C | 15.7°C | 26.9°C | 8.9°C | 63 mm | 80% | 3.6 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 21.7°C with lows near 14°C (mean 17.9°C), based on 45 years of NASA POWER data.
March averages 84 mm of rainfall in Hamilton, one of the drier months. The wettest on record was 198 mm in 1990.
The hottest March reached 27.2°C in 2013. The coldest dipped to 6.6°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have fallen by about 0.4°C. Daytime highs moved from 22°C to 21.6°C and overnight lows from 14.3°C to 13.7°C over the same span.
March is one of the warmer months of the year in Hamilton and one of the drier months, so plan for around 21.7°C daytime highs and 14°C at night.
Not quite — March is the 10th coolest month in Hamilton, averaging 17.9°C.
For March in Hamilton, pack light layers you can adjust through the day, with typical highs of 21.7°C and lows of 14°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 78% — quite humid.
Average wind speed in March is 3.6 m/s. The windiest March on record averaged 4.7 m/s (1992).
The wettest March on record was 1990 with 198 mm. On average, March sees 84 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 Hamilton behaves each March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
