April is one of the cooler months of the year in Suwanee, with average highs near 21.3°C and lows around 9°C (mean 15.2°C). It is about average for rainfall, averaging 102 mm of rainfall and 78% relative humidity across the period.
April is one of the cooler months of the year in Suwanee. Across 45 years of records, the warmest April in Suwanee was 2017 — when the month averaged 18°C — while the coldest was 1983 at 12.1°C. Typical April days reach 21.3°C with nights near 9°C. The long-term trend is warming, about 0.4°C per decade.
April is about average for rainfall in Suwanee, averaging 102 mm of rainfall. The wettest April on record was 1998 with 226 mm, while the driest was 1986 at 22 mm.
Relative humidity in Suwanee during April averages 78%. The most humid April was 1984 at 84%, and the least humid was 1986 at 65%.
April receives about 5.4 kWh/m²/day of solar energy in Suwanee. The sunniest April was 2021 at 6.1 kWh/m²/day, and the cloudiest were 1984 and 1991 at 4.5.
Average wind speed in Suwanee during April is 1.2 m/s. The windiest Aprils were 2000, 2007 and 2009, among others at 1.4 m/s, while the calmest were 2010, 2012 and 2025, among others at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.4°C | 14.7°C | 15.3°C | 16.0°C | 15.4°C | +1°C |
| Avg High | 20.7°C | 20.8°C | 21.5°C | 22.1°C | 21.7°C | +1°C |
| Avg Low | 8.1°C | 8.6°C | 9.1°C | 10.0°C | 9.2°C | +1.1°C |
| Avg Rain | 102 mm | 103 mm | 81 mm | 115 mm | 111 mm | +9 mm |
April temperatures in Suwanee have risen by about 1.3°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -5°C (2007) to a record high of 32.8°C (1986).
Rainfall in April is about average for rainfall, averaging 102 mm, with a wettest year of 226 mm.
A good time to visit Suwanee
April is a good time to visit Suwanee, with days averaging 21.3°C and nights around 9°C (mean 15.2°C, close to Suwanee's yearly average) and higher rainfall. September and May are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 23.4°C | 17.2°C | 11.0°C | 28.3°C | 1.5°C | 127 mm | 79% | 1.1 m/s | 5.4 |
| 2024 | 22.4°C | 16.3°C | 10.3°C | 28.2°C | 1.8°C | 97 mm | 79% | 1.2 m/s | 5.2 |
| 2023 | 21.3°C | 15.3°C | 9.3°C | 27.7°C | 3.4°C | 153 mm | 79% | 1.2 m/s | 5.4 |
| 2022 | 21.2°C | 14.5°C | 7.8°C | 27.1°C | 0.9°C | 105 mm | 77% | 1.2 m/s | 5.5 |
| 2021 | 21.2°C | 14.8°C | 8.4°C | 27.5°C | -2.8°C | 52 mm | 74% | 1.2 m/s | 6.1 |
| 2020 | 20.6°C | 14.4°C | 8.2°C | 25.9°C | 1.9°C | 134 mm | 77% | 1.3 m/s | 5.6 |
| 2019 | 22.5°C | 16.5°C | 10.4°C | 28.0°C | -1.0°C | 149 mm | 79% | 1.2 m/s | 5.6 |
| 2018 | 19.7°C | 13.2°C | 6.6°C | 24.8°C | -0.8°C | 122 mm | 77% | 1.3 m/s | 5.4 |
| 2017 🔥 | 23.9°C | 18.0°C | 12.1°C | 28.2°C | 2.2°C | 129 mm | 79% | 1.2 m/s | 5.4 |
| 2016 | 21.6°C | 15.6°C | 9.7°C | 29.0°C | 2.1°C | 62 mm | 77% | 1.2 m/s | 5.9 |
| 2015 | 22.2°C | 16.7°C | 11.3°C | 27.2°C | 3.6°C | 172 mm | 82% | 1.2 m/s | 4.8 |
| 2014 | 21.1°C | 15.2°C | 9.3°C | 25.9°C | -1.8°C | 147 mm | 81% | 1.3 m/s | 5.3 |
| 2013 | 20.5°C | 14.7°C | 8.9°C | 26.5°C | 2.5°C | 137 mm | 82% | 1.2 m/s | 5.4 |
| 2012 | 23.4°C | 17.3°C | 11.1°C | 31.3°C | 2.4°C | 42 mm | 75% | 1.1 m/s | 5.7 |
| 2011 | 22.9°C | 16.7°C | 10.5°C | 27.7°C | 3.2°C | 113 mm | 78% | 1.3 m/s | 5.7 |
| 2010 | 22.9°C | 16.4°C | 10.0°C | 27.8°C | 5.0°C | 80 mm | 78% | 1.1 m/s | 6 |
| 2009 | 20.5°C | 14.4°C | 8.4°C | 28.4°C | -1.7°C | 111 mm | 81% | 1.4 m/s | 5.2 |
| 2008 | 21.1°C | 15.0°C | 8.9°C | 26.1°C | 1.6°C | 87 mm | 79% | 1.1 m/s | 5.5 |
| 2007 | 20.5°C | 13.9°C | 7.3°C | 30.1°C | -5.0°C | 49 mm | 71% | 1.4 m/s | 5.6 |
| 2006 | 23.6°C | 17.3°C | 11.0°C | 28.0°C | 3.0°C | 75 mm | 77% | 1.2 m/s | 5.7 |
| 2005 | 20.5°C | 14.4°C | 8.2°C | 25.0°C | 0.7°C | 113 mm | 80% | 1.3 m/s | 5.2 |
| 2004 | 22.4°C | 15.6°C | 8.8°C | 29.9°C | 0.7°C | 59 mm | 71% | 1.2 m/s | 5.6 |
| 2003 | 21.4°C | 15.6°C | 9.8°C | 27.1°C | 1.7°C | 111 mm | 83% | 1.1 m/s | 5 |
| 2002 | 23.1°C | 17.3°C | 11.4°C | 29.4°C | 1.8°C | 50 mm | 77% | 1.2 m/s | 5.2 |
| 2001 | 22.1°C | 16.1°C | 10.1°C | 29.6°C | 0.4°C | 61 mm | 80% | 1.2 m/s | 5.5 |
| 2000 | 20.1°C | 13.6°C | 7.0°C | 25.7°C | -1.6°C | 98 mm | 78% | 1.4 m/s | 4.8 |
| 1999 | 22.9°C | 17.0°C | 11.1°C | 29.1°C | 2.8°C | 43 mm | 78% | 1.3 m/s | 5.2 |
| 1998 🌧️ | 20.0°C | 14.5°C | 9.0°C | 24.6°C | 1.9°C | 226 mm | 83% | 1.3 m/s | 4.7 |
| 1997 | 19.6°C | 13.2°C | 6.9°C | 24.1°C | 0.1°C | 138 mm | 76% | 1.3 m/s | 5.7 |
| 1996 | 19.5°C | 13.0°C | 6.5°C | 26.4°C | -1.8°C | 98 mm | 79% | 1.3 m/s | 5.4 |
| 1995 | 21.7°C | 15.3°C | 8.8°C | 27.1°C | 1.1°C | 82 mm | 79% | 1.1 m/s | 5.5 |
| 1994 | 22.8°C | 16.5°C | 10.1°C | 29.0°C | 0.3°C | 110 mm | 79% | 1.1 m/s | 5.7 |
| 1993 | 18.6°C | 12.5°C | 6.3°C | 25.3°C | -2.8°C | 77 mm | 79% | 1.3 m/s | 5.2 |
| 1992 | 20.4°C | 14.2°C | 8.1°C | 26.8°C | -3.9°C | 48 mm | 80% | 1.2 m/s | 5.3 |
| 1991 | 22.2°C | 16.9°C | 11.6°C | 27.4°C | 2.2°C | 143 mm | 83% | 1.1 m/s | 4.5 |
| 1990 | 20.2°C | 13.8°C | 7.5°C | 26.6°C | -2.4°C | 62 mm | 79% | 1.2 m/s | 5.5 |
| 1989 | 20.5°C | 14.4°C | 8.3°C | 27.3°C | -1.7°C | 124 mm | 79% | 1.1 m/s | 5.3 |
| 1988 | 20.8°C | 14.4°C | 8.1°C | 27.6°C | 2.1°C | 127 mm | 77% | 1.3 m/s | 5.2 |
| 1987 | 19.6°C | 13.3°C | 7.0°C | 28.2°C | -3.6°C | 38 mm | 79% | 1.2 m/s | 5.3 |
| 1986 | 23.4°C | 15.8°C | 8.2°C | 32.8°C | -1.5°C | 22 mm | 65% | 1.2 m/s | 5.8 |
| 1985 | 21.7°C | 15.4°C | 9.1°C | 27.2°C | -1.1°C | 66 mm | 75% | 1.1 m/s | 5.7 |
| 1984 | 19.4°C | 14.0°C | 8.5°C | 29.4°C | 1.5°C | 145 mm | 84% | 1.3 m/s | 4.5 |
| 1983 ❄️ | 18.2°C | 12.1°C | 6.1°C | 24.3°C | -3.9°C | 138 mm | 81% | 1.4 m/s | — |
| 1982 | 18.8°C | 13.0°C | 7.3°C | 24.3°C | -4.2°C | 194 mm | 80% | 1.2 m/s | — |
| 1981 | 23.5°C | 17.0°C | 10.5°C | 28.5°C | 2.9°C | 66 mm | 77% | 1.2 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 21.3°C with lows near 9°C (mean 15.2°C), based on 45 years of NASA POWER data.
April averages 102 mm of rainfall in Suwanee, about average for rainfall. The wettest on record was 226 mm in 1998.
The hottest April reached 32.8°C in 1986. The coldest dipped to -5°C in 2007.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.3°C. Daytime highs moved from 20.3°C to 21.9°C and overnight lows from 8.3°C to 9.4°C over the same span.
April is one of the cooler months of the year in Suwanee and about average for rainfall, so plan for around 21.3°C daytime highs and 9°C at night.
Not quite — April is the 6th coolest month in Suwanee, averaging 15.2°C.
For April in Suwanee, pack light layers you can adjust through the day, with typical highs of 21.3°C and lows of 9°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 78% — quite humid.
Average wind speed in April is 1.2 m/s. The windiest April on record averaged 1.4 m/s (1983).
The wettest April on record was 1998 with 226 mm. On average, April sees 102 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 Suwanee 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.
