April is one of the warmer months of the year in Northam, with average highs near 26.5°C and lows around 12.6°C (mean 19.6°C). It is one of the drier months, averaging 22 mm of rainfall and 57% relative humidity across the period.
April is one of the warmer months of the year in Northam. Across 45 years of records, the warmest April in Northam was 2013 — when the month averaged 22.1°C — while the coldest was 2006 at 16.7°C. Typical April days reach 26.5°C with nights near 12.6°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in Northam, averaging 22 mm of rainfall. The wettest April on record was 2016 with 55 mm, while the driest was 1982 at 1 mm.
Relative humidity in Northam during April averages 57%. The most humid April was 2016 at 71%, and the least humid was 2024 at 43%.
April receives about 4.6 kWh/m²/day of solar energy in Northam. The sunniest April was 1986 at 5.1 kWh/m²/day, and the cloudiest was 2016 at 3.9.
Average wind speed in Northam during April is 3.1 m/s. The windiest Aprils were 1989 and 2024 at 3.7 m/s, while the calmest was 2013 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.4°C | 19.6°C | 19.2°C | 19.9°C | 19.7°C | +0.3°C |
| Avg High | 26.6°C | 26.4°C | 26.1°C | 26.8°C | 26.4°C | -0.2°C |
| Avg Low | 12.3°C | 12.8°C | 12.2°C | 12.9°C | 13.0°C | +0.7°C |
| Avg Rain | 22 mm | 22 mm | 25 mm | 19 mm | 22 mm | 0 mm |
April temperatures in Northam have stayed relatively stable across the record.
April has ranged from a record low of 4.3°C (1984) to a record high of 38.5°C (2021).
Rainfall in April is one of the drier months, averaging 22 mm, with a wettest year of 55 mm.
One of the best times to visit Northam
April is one of the best times to visit Northam. Expect days averaging 26.5°C and nights around 12.6°C (mean 19.6°C) — warmer than Northam's yearly average — with low rainfall (22 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 | 27.3°C | 20.7°C | 14.1°C | 34.1°C | 7.7°C | 13 mm | 54% | 3.3 m/s | 4.4 |
| 2024 | 27.7°C | 20.6°C | 13.4°C | 34.9°C | 10.0°C | 13 mm | 43% | 3.7 m/s | 4.9 |
| 2023 | 23.6°C | 17.1°C | 10.7°C | 30.2°C | 5.4°C | 34 mm | 66% | 3 m/s | 4.4 |
| 2022 | 24.7°C | 18.3°C | 12.0°C | 29.8°C | 6.0°C | 40 mm | 63% | 3.1 m/s | 4.5 |
| 2021 | 28.0°C | 20.9°C | 13.8°C | 38.5°C | 7.8°C | 29 mm | 53% | 2.9 m/s | 4.5 |
| 2020 | 27.3°C | 20.5°C | 13.8°C | 37.6°C | 6.1°C | 4 mm | 54% | 2.9 m/s | 4.4 |
| 2019 | 26.8°C | 19.4°C | 11.9°C | 35.2°C | 4.7°C | 16 mm | 54% | 3.2 m/s | 4.8 |
| 2018 | 27.5°C | 20.1°C | 12.8°C | 35.6°C | 8.8°C | 5 mm | 58% | 3 m/s | 4.7 |
| 2017 | 27.2°C | 19.6°C | 12.1°C | 32.4°C | 7.1°C | 6 mm | 51% | 2.7 m/s | 5 |
| 2016 🌧️ | 24.5°C | 18.8°C | 13.0°C | 32.5°C | 7.4°C | 55 mm | 71% | 3 m/s | 3.9 |
| 2015 | 24.6°C | 18.2°C | 11.7°C | 29.5°C | 6.9°C | 26 mm | 61% | 3.5 m/s | 4.3 |
| 2014 | 27.3°C | 20.3°C | 13.3°C | 35.3°C | 7.2°C | 42 mm | 53% | 2.6 m/s | 4.7 |
| 2013 🔥 | 28.7°C | 22.1°C | 15.5°C | 36.7°C | 8.8°C | 9 mm | 57% | 2.5 m/s | 4.1 |
| 2012 | 27.2°C | 20.3°C | 13.3°C | 34.2°C | 7.2°C | 14 mm | 52% | 3 m/s | 4.5 |
| 2011 | 27.6°C | 20.6°C | 13.6°C | 34.2°C | 7.2°C | 11 mm | 50% | 3.5 m/s | 4.9 |
| 2010 | 26.9°C | 19.6°C | 12.2°C | 33.4°C | 8.8°C | 5 mm | 60% | 3 m/s | 4.6 |
| 2009 | 28.2°C | 20.7°C | 13.1°C | 34.2°C | 7.6°C | 16 mm | 48% | 3.2 m/s | 4.8 |
| 2008 | 24.1°C | 17.7°C | 11.2°C | 30.6°C | 6.2°C | 51 mm | 67% | 3 m/s | 4.4 |
| 2007 | 26.1°C | 19.0°C | 12.0°C | 35.7°C | 7.2°C | 35 mm | 61% | 3 m/s | 4.7 |
| 2006 ❄️ | 23.5°C | 16.7°C | 9.8°C | 30.3°C | 5.7°C | 20 mm | 65% | 3 m/s | 4.6 |
| 2005 | 25.9°C | 18.7°C | 11.4°C | 33.4°C | 8.2°C | 18 mm | 62% | 3 m/s | 4.7 |
| 2004 | 27.3°C | 20.3°C | 13.3°C | 33.0°C | 8.5°C | 7 mm | 55% | 2.9 m/s | 4.5 |
| 2003 | 26.1°C | 19.5°C | 13.0°C | 32.4°C | 6.4°C | 42 mm | 65% | 3.2 m/s | 4.3 |
| 2002 | 26.1°C | 19.4°C | 12.7°C | 35.2°C | 9.3°C | 35 mm | 62% | 3.3 m/s | 4.4 |
| 2001 | 28.4°C | 20.7°C | 13.1°C | 36.0°C | 7.6°C | 6 mm | 49% | 3 m/s | 4.6 |
| 2000 | 25.7°C | 18.9°C | 12.2°C | 30.3°C | 5.1°C | 23 mm | 56% | 3.4 m/s | 4.7 |
| 1999 | 27.4°C | 20.4°C | 13.4°C | 32.2°C | 8.5°C | 10 mm | 59% | 3 m/s | 4.8 |
| 1998 | 26.4°C | 19.7°C | 13.0°C | 36.1°C | 6.9°C | 27 mm | 57% | 3.1 m/s | 4.3 |
| 1997 | 25.7°C | 19.7°C | 13.6°C | 32.9°C | 9.2°C | 39 mm | 67% | 3 m/s | 4.2 |
| 1996 | 26.7°C | 19.8°C | 12.8°C | 36.7°C | 6.6°C | 16 mm | 52% | 3.2 m/s | 4.6 |
| 1995 | 25.3°C | 18.5°C | 11.7°C | 32.8°C | 6.5°C | 12 mm | 57% | 2.9 m/s | 4.6 |
| 1994 | 28.9°C | 21.1°C | 13.2°C | 33.9°C | 9.4°C | 1 mm | 49% | 3 m/s | 4.9 |
| 1993 | 26.4°C | 19.3°C | 12.2°C | 34.6°C | 6.1°C | 19 mm | 59% | 2.9 m/s | 4.6 |
| 1992 | 25.3°C | 19.3°C | 13.4°C | 31.1°C | 8.1°C | 37 mm | 67% | 3.4 m/s | 4.4 |
| 1991 | 27.6°C | 20.3°C | 13.0°C | 36.3°C | 7.8°C | 24 mm | 51% | 3.2 m/s | 4.8 |
| 1990 | 24.3°C | 18.0°C | 11.7°C | 33.0°C | 5.9°C | 37 mm | 61% | 3.5 m/s | 4.6 |
| 1989 | 25.8°C | 19.3°C | 12.7°C | 33.8°C | 6.6°C | 32 mm | 58% | 3.7 m/s | 4.2 |
| 1988 | 26.9°C | 20.0°C | 13.2°C | 33.8°C | 7.1°C | 33 mm | 57% | 3 m/s | 4.3 |
| 1987 | 26.6°C | 19.8°C | 12.9°C | 34.9°C | 7.0°C | 43 mm | 57% | 3 m/s | 4.3 |
| 1986 | 26.0°C | 18.1°C | 10.3°C | 35.4°C | 6.6°C | 4 mm | 49% | 3.4 m/s | 5.1 |
| 1985 | 26.1°C | 18.9°C | 11.7°C | 31.5°C | 6.6°C | 15 mm | 54% | 3.3 m/s | 5 |
| 1984 | 25.9°C | 19.3°C | 12.6°C | 36.0°C | 4.3°C | 50 mm | 57% | 3.2 m/s | 4.5 |
| 1983 | 26.2°C | 19.0°C | 11.8°C | 32.9°C | 5.0°C | 5 mm | 53% | 3.2 m/s | — |
| 1982 | 27.0°C | 19.1°C | 11.2°C | 34.8°C | 6.1°C | 1 mm | 47% | 3.2 m/s | — |
| 1981 | 28.9°C | 21.5°C | 14.2°C | 35.5°C | 10.1°C | 16 mm | 58% | 2.8 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 26.5°C with lows near 12.6°C (mean 19.6°C), based on 45 years of NASA POWER data.
April averages 22 mm of rainfall in Northam, one of the drier months. The wettest on record was 55 mm in 2016.
The hottest April reached 38.5°C in 2021. The coldest dipped to 4.3°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have fallen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 12.3°C to 12.8°C while daytime highs eased from 26.8°C to 26.3°C, narrowing the gap between day and night.
April is one of the warmer months of the year in Northam and one of the drier months, so plan for around 26.5°C daytime highs and 12.6°C at night.
Not quite — April is the 7th coolest month in Northam, averaging 19.6°C.
For April in Northam, pack light layers you can adjust through the day, with typical highs of 26.5°C and lows of 12.6°C.
Relative humidity in April averages 57% — moderately humid.
Average wind speed in April is 3.1 m/s. The windiest April on record averaged 3.7 m/s (1989).
The wettest April on record was 2016 with 55 mm. On average, April sees 22 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 April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
