March is one of the warmer months of the year in Hamilton, with average highs near 25.1°C and lows around 11.2°C (mean 18.2°C). It is one of the drier months, averaging 33 mm of rainfall and 62% 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 2017 — when the month averaged 20.7°C — while the coldest was 1987 at 15.9°C. Typical March days reach 25.1°C with nights near 11.2°C. The long-term trend is warming, about 0.2°C per decade.
March is one of the drier months in Hamilton, averaging 33 mm of rainfall. The wettest March on record was 1983 with 113 mm, while the driest were 1994 and 2024 at 3 mm.
Relative humidity in Hamilton during March averages 62%. The most humid March was 2011 at 73%, and the least humid was 1986 at 52%.
March receives about 5 kWh/m²/day of solar energy in Hamilton. The sunniest March was 2006 at 5.7 kWh/m²/day, and the cloudiest were 1989 and 2023 at 4.5.
Average wind speed in Hamilton during March is 3.1 m/s. The windiest March was 1984 at 3.5 m/s, while the calmest were 1994, 2010 and 2021 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.2°C | 17.8°C | 18.1°C | 18.5°C | 18.4°C | +0.2°C |
| Avg High | 25.1°C | 24.7°C | 25.2°C | 25.3°C | 25.3°C | +0.2°C |
| Avg Low | 11.2°C | 10.9°C | 11.0°C | 11.8°C | 11.5°C | +0.3°C |
| Avg Rain | 45 mm | 27 mm | 29 mm | 35 mm | 32 mm | -13 mm |
March temperatures in Hamilton have risen by about 0.7°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 4.3°C (1984) to a record high of 40.1°C (1986).
Rainfall in March is one of the drier months, averaging 33 mm, with a wettest year of 113 mm.
One of the best times to visit Hamilton
March is one of the best times to visit Hamilton. Expect days averaging 25.1°C and nights around 11.2°C (mean 18.2°C) — warmer than Hamilton's yearly average — with moderate rainfall (33 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 | 27.8°C | 20.3°C | 12.7°C | 36.3°C | 7.9°C | 32 mm | 60% | 3 m/s | 5.4 |
| 2024 | 27.7°C | 19.8°C | 12.0°C | 39.4°C | 6.6°C | 3 mm | 54% | 3 m/s | 5.6 |
| 2023 | 23.5°C | 17.2°C | 10.9°C | 29.7°C | 7.5°C | 48 mm | 70% | 3 m/s | 4.5 |
| 2022 | 24.9°C | 18.4°C | 12.0°C | 32.6°C | 8.4°C | 32 mm | 69% | 3 m/s | 4.9 |
| 2021 | 24.1°C | 17.3°C | 10.6°C | 31.6°C | 5.6°C | 40 mm | 69% | 2.7 m/s | 4.7 |
| 2020 | 23.8°C | 17.3°C | 10.8°C | 32.4°C | 7.7°C | 36 mm | 66% | 3.3 m/s | 4.8 |
| 2019 | 25.7°C | 18.6°C | 11.5°C | 39.1°C | 5.7°C | 20 mm | 59% | 2.9 m/s | 5.2 |
| 2018 | 25.9°C | 19.1°C | 12.2°C | 35.9°C | 7.6°C | 17 mm | 57% | 3.4 m/s | 5.3 |
| 2017 🔥 | 28.1°C | 20.7°C | 13.4°C | 36.3°C | 6.4°C | 37 mm | 59% | 3.1 m/s | 5.3 |
| 2016 | 26.3°C | 19.5°C | 12.7°C | 37.8°C | 8.2°C | 31 mm | 65% | 2.8 m/s | 4.8 |
| 2015 | 23.0°C | 16.4°C | 9.7°C | 28.8°C | 6.3°C | 26 mm | 63% | 3.1 m/s | 5 |
| 2014 | 25.6°C | 18.4°C | 11.2°C | 34.7°C | 7.3°C | 28 mm | 62% | 2.8 m/s | 4.8 |
| 2013 | 27.3°C | 20.5°C | 13.8°C | 37.9°C | 7.7°C | 20 mm | 53% | 3.3 m/s | 4.8 |
| 2012 | 23.5°C | 17.2°C | 10.9°C | 31.2°C | 7.0°C | 59 mm | 67% | 3.3 m/s | 4.8 |
| 2011 | 22.6°C | 16.4°C | 10.2°C | 31.8°C | 5.5°C | 73 mm | 73% | 3.1 m/s | 4.7 |
| 2010 | 25.3°C | 18.6°C | 11.9°C | 33.2°C | 7.9°C | 40 mm | 64% | 2.7 m/s | 4.9 |
| 2009 | 24.2°C | 17.4°C | 10.6°C | 34.3°C | 6.8°C | 35 mm | 65% | 3 m/s | 4.9 |
| 2008 | 27.9°C | 19.9°C | 11.9°C | 39.6°C | 6.5°C | 30 mm | 53% | 3.1 m/s | 5.3 |
| 2007 | 25.5°C | 18.2°C | 10.9°C | 35.1°C | 5.8°C | 21 mm | 61% | 3.4 m/s | 5.2 |
| 2006 | 27.3°C | 19.5°C | 11.7°C | 36.8°C | 7.6°C | 19 mm | 60% | 3 m/s | 5.7 |
| 2005 | 24.1°C | 17.2°C | 10.2°C | 33.9°C | 4.4°C | 10 mm | 64% | 2.9 m/s | 5 |
| 2004 | 24.2°C | 17.1°C | 10.0°C | 37.8°C | 6.9°C | 43 mm | 64% | 3 m/s | 5.4 |
| 2003 | 22.7°C | 16.5°C | 10.4°C | 32.3°C | 6.6°C | 39 mm | 69% | 3.3 m/s | 4.7 |
| 2002 | 25.4°C | 18.4°C | 11.4°C | 34.4°C | 6.7°C | 11 mm | 61% | 3.4 m/s | 5 |
| 2001 | 24.6°C | 17.8°C | 10.9°C | 36.0°C | 7.4°C | 56 mm | 62% | 3.1 m/s | 4.8 |
| 2000 | 26.3°C | 19.1°C | 12.0°C | 39.3°C | 7.1°C | 20 mm | 61% | 3.3 m/s | 4.9 |
| 1999 | 23.2°C | 17.0°C | 10.7°C | 33.6°C | 5.6°C | 55 mm | 68% | 3 m/s | 4.7 |
| 1998 | 26.2°C | 18.7°C | 11.3°C | 37.8°C | 7.5°C | 10 mm | 58% | 3.2 m/s | 5.2 |
| 1997 | 23.3°C | 16.7°C | 10.1°C | 32.8°C | 6.8°C | 21 mm | 65% | 3.3 m/s | 4.7 |
| 1996 | 25.3°C | 18.1°C | 10.9°C | 34.2°C | 6.1°C | 34 mm | 60% | 3.3 m/s | 5 |
| 1995 | 23.2°C | 16.7°C | 10.3°C | 33.8°C | 4.3°C | 31 mm | 64% | 3.1 m/s | 5.2 |
| 1994 | 25.2°C | 17.8°C | 10.4°C | 31.0°C | 5.3°C | 3 mm | 59% | 2.7 m/s | 5.5 |
| 1993 | 24.2°C | 17.9°C | 11.5°C | 31.9°C | 6.2°C | 13 mm | 67% | 3 m/s | 4.9 |
| 1992 | 25.9°C | 19.1°C | 12.2°C | 35.7°C | 8.0°C | 33 mm | 65% | 3 m/s | 4.9 |
| 1991 | 24.2°C | 16.9°C | 9.7°C | 35.4°C | 5.8°C | 37 mm | 61% | 3.2 m/s | 5.3 |
| 1990 | 26.3°C | 19.0°C | 11.7°C | 34.4°C | 5.4°C | 33 mm | 59% | 3.1 m/s | 5.2 |
| 1989 | 26.2°C | 19.7°C | 13.3°C | 40.1°C | 7.0°C | 31 mm | 62% | 3.1 m/s | 4.5 |
| 1988 | 27.1°C | 19.5°C | 12.0°C | 36.5°C | 7.7°C | 37 mm | 56% | 3 m/s | 5.1 |
| 1987 ❄️ | 22.8°C | 15.9°C | 9.0°C | 34.2°C | 4.3°C | 25 mm | 62% | 3.4 m/s | 5.1 |
| 1986 | 27.0°C | 19.0°C | 11.1°C | 40.1°C | 7.3°C | 5 mm | 52% | 3.1 m/s | 5.4 |
| 1985 | 26.7°C | 19.8°C | 12.8°C | 37.2°C | 7.8°C | 35 mm | 59% | 3.2 m/s | 4.7 |
| 1984 | 23.1°C | 16.4°C | 9.7°C | 36.4°C | 4.3°C | 94 mm | 63% | 3.5 m/s | 5 |
| 1983 🌧️ | 24.3°C | 18.0°C | 11.7°C | 38.7°C | 5.3°C | 113 mm | 69% | 3.1 m/s | — |
| 1982 | 26.3°C | 18.8°C | 11.2°C | 35.6°C | 6.2°C | 40 mm | 59% | 3.1 m/s | — |
| 1981 | 22.8°C | 16.3°C | 9.8°C | 31.5°C | 6.1°C | 23 mm | 64% | 3 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 25.1°C with lows near 11.2°C (mean 18.2°C), based on 45 years of NASA POWER data.
March averages 33 mm of rainfall in Hamilton, one of the drier months. The wettest on record was 113 mm in 1983.
The hottest March reached 40.1°C in 1986. The coldest dipped to 4.3°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 0.7°C. Daytime highs moved from 24.6°C to 25.6°C and overnight lows from 11°C to 11.6°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 25.1°C daytime highs and 11.2°C at night.
Not quite — March is the 10th coolest month in Hamilton, averaging 18.2°C.
For March in Hamilton, pack light layers you can adjust through the day, with typical highs of 25.1°C and lows of 11.2°C.
Relative humidity in March averages 62% — moderately humid.
Average wind speed in March is 3.1 m/s. The windiest March on record averaged 3.5 m/s (1984).
The wettest March on record was 1983 with 113 mm. On average, March sees 33 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.
