March is one of the warmer months of the year in Horsham, with average highs near 27.7°C and lows around 12.8°C (mean 20.3°C). It is one of the drier months, averaging 23 mm of rainfall and 53% relative humidity across the period.
March is one of the warmer months of the year in Horsham. Across 45 years of records, the warmest March in Horsham was 2025 — when the month averaged 23.1°C — while the coldest was 1987 at 17.6°C. Typical March days reach 27.7°C with nights near 12.8°C. The long-term trend is warming, about 0.2°C per decade.
March is one of the drier months in Horsham, averaging 23 mm of rainfall. The wettest March on record was 1983 with 88 mm, while the driest was 1986 at 1 mm.
Relative humidity in Horsham during March averages 53%. The most humid March was 2011 at 67%, and the least humid was 1986 at 41%.
March receives about 5.6 kWh/m²/day of solar energy in Horsham. The sunniest Marchs were 1994, 2004 and 2006 at 6.1 kWh/m²/day, and the cloudiest was 2023 at 5.1.
Average wind speed in Horsham during March is 3.4 m/s. The windiest March was 2002 at 3.9 m/s, while the calmest was 1994 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.3°C | 19.8°C | 20.2°C | 20.6°C | 20.5°C | +0.2°C |
| Avg High | 27.7°C | 27.3°C | 28.0°C | 27.7°C | 27.9°C | +0.2°C |
| Avg Low | 13.0°C | 12.4°C | 12.5°C | 13.4°C | 13.2°C | +0.2°C |
| Avg Rain | 32 mm | 17 mm | 14 mm | 23 mm | 33 mm | +1 mm |
March temperatures in Horsham have risen by about 0.8°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 5.2°C (2008) to a record high of 41.8°C (1991).
Rainfall in March is one of the drier months, averaging 23 mm, with a wettest year of 88 mm.
One of the best times to visit Horsham
March is one of the best times to visit Horsham. Expect days averaging 27.7°C and nights around 12.8°C (mean 20.3°C) — warmer than Horsham's yearly average — with low rainfall (23 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 🔥 | 31.0°C | 23.1°C | 15.2°C | 38.9°C | 10.0°C | 18 mm | 48% | 3.3 m/s | 5.8 |
| 2024 | 30.2°C | 22.2°C | 14.2°C | 39.7°C | 7.9°C | 3 mm | 44% | 3.2 m/s | 5.9 |
| 2023 | 26.4°C | 19.5°C | 12.6°C | 35.2°C | 9.5°C | 37 mm | 60% | 3.3 m/s | 5.1 |
| 2022 | 27.3°C | 20.4°C | 13.5°C | 32.0°C | 9.5°C | 38 mm | 62% | 3.3 m/s | 5.6 |
| 2021 | 25.9°C | 18.8°C | 11.7°C | 32.5°C | 7.3°C | 55 mm | 61% | 3.1 m/s | 5.3 |
| 2020 | 26.4°C | 19.1°C | 11.7°C | 33.6°C | 7.6°C | 45 mm | 60% | 3.7 m/s | 5.5 |
| 2019 | 28.4°C | 21.1°C | 13.7°C | 39.2°C | 6.5°C | 16 mm | 47% | 3.4 m/s | 5.7 |
| 2018 | 28.2°C | 20.7°C | 13.2°C | 36.1°C | 8.3°C | 16 mm | 48% | 3.7 m/s | 5.8 |
| 2017 | 30.4°C | 23.0°C | 15.5°C | 36.8°C | 6.0°C | 22 mm | 50% | 3.2 m/s | 5.8 |
| 2016 | 29.5°C | 22.5°C | 15.5°C | 40.2°C | 8.3°C | 25 mm | 53% | 3 m/s | 5.4 |
| 2015 | 26.0°C | 18.7°C | 11.4°C | 33.4°C | 7.2°C | 10 mm | 52% | 3.5 m/s | 5.6 |
| 2014 | 28.1°C | 20.8°C | 13.6°C | 35.8°C | 8.0°C | 19 mm | 52% | 3.1 m/s | 5.3 |
| 2013 | 28.9°C | 21.9°C | 14.8°C | 38.4°C | 8.1°C | 8 mm | 47% | 3.6 m/s | 5.4 |
| 2012 | 25.3°C | 18.6°C | 11.8°C | 31.6°C | 7.3°C | 38 mm | 63% | 3.7 m/s | 5.3 |
| 2011 | 25.1°C | 18.2°C | 11.4°C | 32.1°C | 6.6°C | 34 mm | 67% | 3.5 m/s | 5.3 |
| 2010 | 27.4°C | 20.3°C | 13.1°C | 34.3°C | 8.6°C | 46 mm | 59% | 3.2 m/s | 5.2 |
| 2009 | 27.5°C | 20.0°C | 12.5°C | 36.2°C | 8.0°C | 19 mm | 54% | 3.4 m/s | 5.4 |
| 2008 | 30.3°C | 22.1°C | 14.0°C | 40.5°C | 5.2°C | 18 mm | 43% | 3.2 m/s | 5.6 |
| 2007 | 27.8°C | 20.2°C | 12.5°C | 37.4°C | 7.2°C | 16 mm | 52% | 3.7 m/s | 5.6 |
| 2006 | 30.0°C | 21.7°C | 13.5°C | 40.7°C | 9.9°C | 9 mm | 47% | 3.2 m/s | 6.1 |
| 2005 | 27.0°C | 19.2°C | 11.5°C | 37.1°C | 6.3°C | 3 mm | 51% | 3.3 m/s | 5.8 |
| 2004 | 27.8°C | 19.6°C | 11.5°C | 38.2°C | 7.6°C | 15 mm | 50% | 3.3 m/s | 6.1 |
| 2003 | 25.5°C | 18.2°C | 11.0°C | 33.4°C | 6.9°C | 6 mm | 62% | 3.5 m/s | 5.7 |
| 2002 | 28.2°C | 20.5°C | 12.8°C | 35.8°C | 8.8°C | 8 mm | 49% | 3.9 m/s | 5.6 |
| 2001 | 27.2°C | 19.7°C | 12.2°C | 36.1°C | 6.3°C | 34 mm | 52% | 3.3 m/s | 5.3 |
| 2000 | 28.2°C | 20.8°C | 13.4°C | 38.2°C | 8.0°C | 9 mm | 55% | 3.3 m/s | 5.4 |
| 1999 | 25.8°C | 19.1°C | 12.4°C | 33.9°C | 6.0°C | 41 mm | 60% | 3.3 m/s | 5.3 |
| 1998 | 28.7°C | 20.7°C | 12.6°C | 41.2°C | 7.5°C | 4 mm | 47% | 3.5 m/s | 5.7 |
| 1997 | 26.4°C | 18.9°C | 11.5°C | 34.3°C | 7.4°C | 7 mm | 53% | 3.7 m/s | 5.5 |
| 1996 | 27.5°C | 19.7°C | 12.0°C | 35.8°C | 6.8°C | 35 mm | 54% | 3.6 m/s | 5.5 |
| 1995 | 26.1°C | 18.8°C | 11.6°C | 35.5°C | 6.3°C | 7 mm | 53% | 3.7 m/s | 5.9 |
| 1994 | 27.2°C | 19.3°C | 11.5°C | 31.7°C | 7.5°C | 2 mm | 51% | 2.9 m/s | 6.1 |
| 1993 | 26.7°C | 19.7°C | 12.7°C | 33.1°C | 7.7°C | 17 mm | 58% | 3.3 m/s | 5.3 |
| 1992 | 28.4°C | 21.3°C | 14.2°C | 36.3°C | 7.8°C | 23 mm | 54% | 3.3 m/s | 5.3 |
| 1991 | 27.6°C | 19.7°C | 11.8°C | 41.8°C | 6.5°C | 13 mm | 48% | 3.7 m/s | 5.8 |
| 1990 | 28.7°C | 21.0°C | 13.4°C | 35.9°C | 7.7°C | 18 mm | 50% | 3.5 m/s | 5.9 |
| 1989 | 28.6°C | 21.9°C | 15.3°C | 39.9°C | 7.4°C | 45 mm | 52% | 3.1 m/s | 5.2 |
| 1988 | 29.2°C | 21.5°C | 13.7°C | 37.4°C | 8.3°C | 32 mm | 45% | 3.3 m/s | 5.7 |
| 1987 ❄️ | 25.3°C | 17.6°C | 10.0°C | 34.4°C | 5.7°C | 8 mm | 53% | 3.8 m/s | 5.7 |
| 1986 | 30.0°C | 21.6°C | 13.3°C | 40.8°C | 9.5°C | 1 mm | 41% | 3.5 m/s | 6 |
| 1985 | 29.4°C | 22.0°C | 14.7°C | 36.7°C | 9.0°C | 17 mm | 49% | 3.6 m/s | 5.4 |
| 1984 | 25.6°C | 18.3°C | 11.0°C | 36.6°C | 6.9°C | 64 mm | 54% | 3.8 m/s | 5.7 |
| 1983 🌧️ | 27.2°C | 20.7°C | 14.2°C | 38.9°C | 6.5°C | 88 mm | 59% | 3.5 m/s | — |
| 1982 | 28.6°C | 20.8°C | 13.1°C | 37.4°C | 7.6°C | 26 mm | 51% | 3.4 m/s | — |
| 1981 | 25.4°C | 18.3°C | 11.3°C | 32.9°C | 7.6°C | 10 mm | 51% | 3.4 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 27.7°C with lows near 12.8°C (mean 20.3°C), based on 45 years of NASA POWER data.
March averages 23 mm of rainfall in Horsham, one of the drier months. The wettest on record was 88 mm in 1983.
The hottest March reached 41.8°C in 1991. The coldest dipped to 5.2°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 0.8°C. Daytime highs moved from 27.2°C to 28.2°C and overnight lows from 12.9°C to 13.4°C over the same span.
March is one of the warmer months of the year in Horsham and one of the drier months, so plan for around 27.7°C daytime highs and 12.8°C at night.
Not quite — March is the 9th coolest month in Horsham, averaging 20.3°C.
For March in Horsham, pack light layers you can adjust through the day, with typical highs of 27.7°C and lows of 12.8°C.
Relative humidity in March averages 53% — relatively dry.
Average wind speed in March is 3.4 m/s. The windiest March on record averaged 3.9 m/s (2002).
The wettest March on record was 1983 with 88 mm. On average, March sees 23 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 Horsham 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.
