March is one of the warmer months of the year in Northam, with average highs near 31.4°C and lows around 15.9°C (mean 23.7°C). It is one of the drier months, averaging 20 mm of rainfall and 47% relative humidity across the period.
March is one of the warmer months of the year in Northam. Across 45 years of records, the warmest Marchs in Northam were 2005 and 2025 — when the month averaged 25.8°C — while the coldest was 1984 at 20.8°C. Typical March days reach 31.4°C with nights near 15.9°C. The long-term trend is warming, about 0.3°C per decade.
March is one of the drier months in Northam, averaging 20 mm of rainfall. The wettest March on record was 1999 with 73 mm, while the driest was 1994 at 1 mm.
Relative humidity in Northam during March averages 47%. The most humid March was 1992 at 60%, and the least humid was 1998 at 39%.
March receives about 6.1 kWh/m²/day of solar energy in Northam. The sunniest March was 2012 at 6.7 kWh/m²/day, and the cloudiest was 2005 at 5.4.
Average wind speed in Northam during March is 3.7 m/s. The windiest Marchs were 1997 and 2024 at 4.2 m/s, while the calmest were 1984 and 2021 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.2°C | 23.5°C | 23.6°C | 23.9°C | 24.2°C | +1°C |
| Avg High | 31.1°C | 31.3°C | 31.4°C | 31.4°C | 31.7°C | +0.6°C |
| Avg Low | 15.3°C | 15.8°C | 15.7°C | 16.3°C | 16.6°C | +1.3°C |
| Avg Rain | 18 mm | 23 mm | 14 mm | 24 mm | 21 mm | +4 mm |
March temperatures in Northam have risen by about 1.6°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 6.6°C (2001) to a record high of 43°C (1998).
Rainfall in March is one of the drier months, averaging 20 mm, with a wettest year of 73 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Northam
March is one of the best times to visit Northam. Expect days averaging 31.4°C and nights around 15.9°C (mean 23.7°C) — warmer than Northam's yearly average — with low rainfall (20 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 | 33.8°C | 25.8°C | 17.8°C | 40.6°C | 12.7°C | 21 mm | 44% | 3.5 m/s | 6.3 |
| 2024 | 31.8°C | 24.0°C | 16.2°C | 37.1°C | 11.7°C | 17 mm | 48% | 4.2 m/s | 6.3 |
| 2023 | 32.3°C | 24.4°C | 16.5°C | 38.0°C | 11.9°C | 25 mm | 46% | 3.4 m/s | 6.1 |
| 2022 | 31.4°C | 24.2°C | 17.0°C | 39.7°C | 10.6°C | 7 mm | 49% | 3.9 m/s | 5.7 |
| 2021 | 31.3°C | 23.9°C | 16.6°C | 40.5°C | 10.2°C | 30 mm | 49% | 3.2 m/s | 5.8 |
| 2020 | 29.8°C | 22.8°C | 15.7°C | 36.8°C | 10.3°C | 27 mm | 54% | 3.4 m/s | 5.9 |
| 2019 | 32.7°C | 25.1°C | 17.5°C | 38.2°C | 9.9°C | 7 mm | 44% | 3.4 m/s | 6 |
| 2018 | 32.7°C | 24.8°C | 16.9°C | 37.6°C | 10.9°C | 3 mm | 45% | 4 m/s | 6.2 |
| 2017 | 29.8°C | 22.2°C | 14.6°C | 38.7°C | 7.5°C | 24 mm | 56% | 3.5 m/s | 5.9 |
| 2016 | 31.0°C | 24.1°C | 17.2°C | 38.2°C | 10.7°C | 70 mm | 52% | 3.6 m/s | 5.7 |
| 2015 | 30.1°C | 22.7°C | 15.4°C | 38.8°C | 9.2°C | 41 mm | 54% | 3.5 m/s | 5.9 |
| 2014 | 32.6°C | 25.0°C | 17.3°C | 40.3°C | 11.8°C | 6 mm | 43% | 3.5 m/s | 6.1 |
| 2013 | 29.2°C | 21.7°C | 14.2°C | 35.3°C | 7.6°C | 53 mm | 57% | 3.3 m/s | 5.8 |
| 2012 | 31.5°C | 23.5°C | 15.6°C | 40.9°C | 10.7°C | 4 mm | 40% | 3.8 m/s | 6.7 |
| 2011 | 32.6°C | 25.0°C | 17.4°C | 37.1°C | 14.1°C | 2 mm | 43% | 3.6 m/s | 6.6 |
| 2010 | 31.7°C | 24.4°C | 17.1°C | 40.3°C | 11.7°C | 33 mm | 48% | 3.7 m/s | 6.1 |
| 2009 | 30.6°C | 22.7°C | 14.7°C | 39.4°C | 8.7°C | 10 mm | 48% | 3.6 m/s | 6.3 |
| 2008 | 32.3°C | 24.3°C | 16.4°C | 40.6°C | 11.3°C | 27 mm | 46% | 3.9 m/s | 6.2 |
| 2007 | 31.3°C | 23.4°C | 15.6°C | 40.9°C | 6.6°C | 6 mm | 41% | 4 m/s | 6.6 |
| 2006 | 31.7°C | 23.5°C | 15.3°C | 38.3°C | 10.1°C | 4 mm | 45% | 3.8 m/s | 6.3 |
| 2005 🔥 | 33.2°C | 25.8°C | 18.4°C | 39.6°C | 11.2°C | 42 mm | 48% | 3.3 m/s | 5.4 |
| 2004 | 30.7°C | 22.5°C | 14.3°C | 39.5°C | 7.8°C | 3 mm | 43% | 3.8 m/s | 6.6 |
| 2003 | 32.6°C | 24.8°C | 17.1°C | 40.8°C | 10.8°C | 24 mm | 46% | 3.6 m/s | 6.1 |
| 2002 | 32.3°C | 24.0°C | 15.7°C | 39.6°C | 11.9°C | 1 mm | 43% | 3.6 m/s | 6.2 |
| 2001 | 30.4°C | 22.5°C | 14.7°C | 38.2°C | 6.6°C | 1 mm | 40% | 3.7 m/s | 6.5 |
| 2000 | 29.3°C | 22.1°C | 15.0°C | 36.2°C | 9.7°C | 18 mm | 55% | 3.7 m/s | 6 |
| 1999 🌧️ | 30.0°C | 22.8°C | 15.7°C | 39.1°C | 10.3°C | 73 mm | 57% | 3.8 m/s | 5.8 |
| 1998 | 33.6°C | 25.5°C | 17.3°C | 43.0°C | 10.6°C | 13 mm | 39% | 3.5 m/s | 6.1 |
| 1997 | 30.1°C | 22.4°C | 14.7°C | 35.6°C | 11.6°C | 30 mm | 49% | 4.2 m/s | 6.3 |
| 1996 | 30.7°C | 22.7°C | 14.7°C | 41.9°C | 9.7°C | 4 mm | 44% | 4.1 m/s | 6.2 |
| 1995 | 31.8°C | 24.2°C | 16.5°C | 39.2°C | 9.8°C | 23 mm | 46% | 3.5 m/s | 6.1 |
| 1994 | 34.4°C | 25.6°C | 16.9°C | 40.5°C | 10.1°C | 1 mm | 39% | 3.3 m/s | 6.4 |
| 1993 | 29.6°C | 22.0°C | 14.5°C | 37.7°C | 7.8°C | 12 mm | 49% | 3.7 m/s | 6 |
| 1992 | 29.8°C | 22.7°C | 15.7°C | 39.9°C | 10.4°C | 30 mm | 60% | 4 m/s | 5.6 |
| 1991 | 31.8°C | 23.7°C | 15.6°C | 40.4°C | 7.2°C | 3 mm | 45% | 3.7 m/s | 6.4 |
| 1990 | 31.1°C | 23.5°C | 16.0°C | 42.0°C | 6.9°C | 42 mm | 55% | 3.6 m/s | 5.6 |
| 1989 | 31.7°C | 23.8°C | 15.9°C | 37.3°C | 12.1°C | 3 mm | 43% | 3.8 m/s | 6.6 |
| 1988 | 32.0°C | 24.8°C | 17.5°C | 40.2°C | 11.6°C | 30 mm | 41% | 4.1 m/s | 5.6 |
| 1987 | 31.3°C | 23.7°C | 16.2°C | 36.7°C | 9.0°C | 9 mm | 41% | 3.6 m/s | 5.7 |
| 1986 | 30.1°C | 21.8°C | 13.5°C | 39.7°C | 7.3°C | 13 mm | 51% | 3.5 m/s | 6.1 |
| 1985 | 32.9°C | 24.8°C | 16.8°C | 39.3°C | 10.1°C | 20 mm | 42% | 3.6 m/s | 6.4 |
| 1984 ❄️ | 28.5°C | 20.8°C | 13.1°C | 37.7°C | 7.5°C | 47 mm | 53% | 3.2 m/s | 5.8 |
| 1983 | 31.9°C | 24.1°C | 16.4°C | 37.3°C | 11.6°C | 28 mm | 43% | 3.6 m/s | — |
| 1982 | 29.9°C | 21.8°C | 13.6°C | 37.6°C | 7.8°C | 9 mm | 42% | 4 m/s | — |
| 1981 | 31.2°C | 22.8°C | 14.5°C | 36.4°C | 8.3°C | 2 mm | 40% | 3.4 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 31.4°C with lows near 15.9°C (mean 23.7°C), based on 45 years of NASA POWER data.
March averages 20 mm of rainfall in Northam, one of the drier months. The wettest on record was 73 mm in 1999.
The hottest March reached 43°C in 1998. The coldest dipped to 6.6°C in 2001.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.6°C. Daytime highs moved from 30.9°C to 32.1°C and overnight lows from 14.9°C to 16.8°C over the same span.
March is one of the warmer months of the year in Northam and one of the drier months, so plan for around 31.4°C daytime highs and 15.9°C at night.
Not quite — March is the 9th coolest month in Northam, averaging 23.7°C.
For March in Northam, pack light, breathable clothing and sun protection, with typical highs of 31.4°C and lows of 15.9°C.
Relative humidity in March averages 47% — relatively dry.
Average wind speed in March is 3.7 m/s. The windiest March on record averaged 4.2 m/s (1997).
The wettest March on record was 1999 with 73 mm. On average, March sees 20 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 Northam 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.
