April is close to Baytown's year-round average, with average highs near 26.1°C and lows around 14.9°C (mean 20.5°C). It is one of the drier months, averaging 90 mm of rainfall and 78% relative humidity across the period.
April is close to Baytown's year-round average. Across 45 years of records, the warmest April in Baytown was 2011 — when the month averaged 23.7°C — while the coldest was 1983 at 17.3°C. Typical April days reach 26.1°C with nights near 14.9°C. The long-term trend is warming, about 0.4°C per decade.
April is one of the drier months in Baytown, averaging 90 mm of rainfall. The wettest April on record was 2009 with 273 mm, while the driest was 1987 at 8 mm.
Relative humidity in Baytown during April averages 78%. The most humid April was 2015 at 87%, and the least humid was 2011 at 66%.
April receives about 5.5 kWh/m²/day of solar energy in Baytown. The sunniest April was 1987 at 6.5 kWh/m²/day, and the cloudiest was 2015 at 4.4.
Average wind speed in Baytown during April is 1.9 m/s. The windiest April was 2011 at 2.5 m/s, while the calmest was 1992 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.0°C | 19.7°C | 20.6°C | 20.9°C | 21.7°C | +1.7°C |
| Avg High | 26.1°C | 25.1°C | 26.0°C | 26.4°C | 27.4°C | +1.3°C |
| Avg Low | 14.0°C | 14.3°C | 15.3°C | 15.3°C | 16.0°C | +2°C |
| Avg Rain | 50 mm | 111 mm | 95 mm | 91 mm | 102 mm | +52 mm |
April temperatures in Baytown have risen by about 1.7°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -0.1°C (1987) to a record high of 34.7°C (2006).
Rainfall in April is one of the drier months, averaging 90 mm, with a wettest year of 273 mm.
One of the best times to visit Baytown
April is one of the best times to visit Baytown. Expect days averaging 26.1°C and nights around 14.9°C (mean 20.5°C) — close to Baytown's yearly average — with higher rainfall (90 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 | 28.2°C | 22.9°C | 17.6°C | 30.7°C | 6.1°C | 83 mm | 78% | 2.2 m/s | 5.5 |
| 2024 | 27.0°C | 22.0°C | 17.0°C | 31.0°C | 8.9°C | 165 mm | 81% | 2.1 m/s | 5.1 |
| 2023 | 25.5°C | 20.1°C | 14.6°C | 31.5°C | 8.9°C | 144 mm | 80% | 1.8 m/s | 5.1 |
| 2022 | 28.9°C | 22.8°C | 16.6°C | 32.8°C | 7.7°C | 44 mm | 71% | 2.3 m/s | 5.7 |
| 2021 | 26.9°C | 20.9°C | 14.9°C | 31.8°C | 6.8°C | 92 mm | 73% | 2 m/s | 5.1 |
| 2020 | 27.7°C | 21.6°C | 15.5°C | 33.2°C | 8.5°C | 84 mm | 74% | 1.9 m/s | 5.2 |
| 2019 | 25.7°C | 20.0°C | 14.3°C | 30.2°C | 3.0°C | 74 mm | 79% | 2.1 m/s | 5.4 |
| 2018 | 24.7°C | 18.8°C | 12.9°C | 29.8°C | 5.5°C | 63 mm | 75% | 1.9 m/s | 5.8 |
| 2017 | 26.6°C | 21.3°C | 16.0°C | 31.6°C | 7.9°C | 91 mm | 79% | 2 m/s | 5.9 |
| 2016 | 26.3°C | 21.3°C | 16.3°C | 29.6°C | 8.7°C | 253 mm | 80% | 1.8 m/s | 5.1 |
| 2015 | 25.8°C | 21.6°C | 17.4°C | 29.7°C | 10.2°C | 198 mm | 87% | 1.6 m/s | 4.4 |
| 2014 | 26.4°C | 20.3°C | 14.2°C | 34.4°C | 4.9°C | 29 mm | 74% | 2.1 m/s | 5.6 |
| 2013 | 25.3°C | 19.2°C | 13.2°C | 29.2°C | 4.6°C | 108 mm | 77% | 2.1 m/s | 5 |
| 2012 | 26.8°C | 21.8°C | 16.8°C | 29.2°C | 9.4°C | 62 mm | 81% | 1.9 m/s | 6.1 |
| 2011 🔥 | 30.3°C | 23.7°C | 17.1°C | 33.3°C | 6.7°C | 13 mm | 66% | 2.5 m/s | 5.9 |
| 2010 | 26.3°C | 20.5°C | 14.7°C | 30.9°C | 6.5°C | 22 mm | 76% | 1.9 m/s | 5.7 |
| 2009 🌧️ | 24.6°C | 19.3°C | 14.0°C | 29.5°C | 2.4°C | 273 mm | 76% | 2.3 m/s | 5.5 |
| 2008 | 26.9°C | 20.8°C | 14.8°C | 30.7°C | 5.0°C | 44 mm | 73% | 2 m/s | 5.9 |
| 2007 | 23.3°C | 18.2°C | 13.0°C | 28.3°C | 1.4°C | 106 mm | 82% | 1.7 m/s | 5.2 |
| 2006 | 29.8°C | 23.6°C | 17.4°C | 34.7°C | 10.1°C | 79 mm | 73% | 1.9 m/s | 5.8 |
| 2005 | 24.6°C | 19.1°C | 13.6°C | 29.3°C | 6.7°C | 37 mm | 77% | 1.9 m/s | 5.9 |
| 2004 | 24.5°C | 19.9°C | 15.2°C | 28.0°C | 6.6°C | 124 mm | 83% | 1.8 m/s | 5.5 |
| 2003 | 25.3°C | 20.2°C | 15.2°C | 28.6°C | 3.8°C | 36 mm | 82% | 1.8 m/s | 5.3 |
| 2002 | 27.5°C | 22.5°C | 17.6°C | 33.8°C | 10.5°C | 87 mm | 81% | 1.8 m/s | 5.5 |
| 2001 | 26.3°C | 21.8°C | 17.4°C | 29.5°C | 9.5°C | 40 mm | 82% | 2 m/s | 5.6 |
| 2000 | 26.7°C | 20.7°C | 14.6°C | 32.1°C | 5.4°C | 124 mm | 75% | 1.8 m/s | 5.8 |
| 1999 | 27.9°C | 22.3°C | 16.8°C | 34.1°C | 5.6°C | 47 mm | 76% | 2.1 m/s | 5.8 |
| 1998 | 25.3°C | 19.1°C | 12.9°C | 30.4°C | 8.3°C | 28 mm | 74% | 1.9 m/s | 5.7 |
| 1997 | 22.7°C | 17.6°C | 12.4°C | 28.6°C | 4.8°C | 170 mm | 83% | 2.1 m/s | 4.8 |
| 1996 | 27.1°C | 20.1°C | 13.1°C | 32.3°C | 3.1°C | 72 mm | 70% | 2.2 m/s | 5.7 |
| 1995 | 24.6°C | 19.5°C | 14.4°C | 28.6°C | 6.8°C | 121 mm | 83% | 1.9 m/s | 5.6 |
| 1994 | 25.6°C | 20.4°C | 15.1°C | 31.1°C | 4.7°C | 86 mm | 80% | 2 m/s | 5.2 |
| 1993 | 22.9°C | 17.4°C | 11.9°C | 28.3°C | 4.9°C | 135 mm | 82% | 2 m/s | 5.5 |
| 1992 | 24.4°C | 19.4°C | 14.3°C | 28.4°C | 6.2°C | 114 mm | 83% | 1.5 m/s | 5.6 |
| 1991 | 25.9°C | 21.7°C | 17.5°C | 29.5°C | 7.8°C | 226 mm | 87% | 1.8 m/s | 4.6 |
| 1990 | 24.6°C | 19.6°C | 14.7°C | 29.6°C | 5.6°C | 114 mm | 83% | 1.9 m/s | 5.6 |
| 1989 | 26.2°C | 20.4°C | 14.5°C | 31.5°C | 5.9°C | 44 mm | 76% | 1.9 m/s | 5.6 |
| 1988 | 26.3°C | 19.7°C | 13.2°C | 32.3°C | 3.5°C | 63 mm | 74% | 1.8 m/s | 5.3 |
| 1987 | 26.5°C | 18.7°C | 10.9°C | 34.4°C | -0.1°C | 8 mm | 69% | 1.6 m/s | 6.5 |
| 1986 | 27.1°C | 21.5°C | 16.0°C | 32.3°C | 9.7°C | 69 mm | 73% | 1.9 m/s | 5.2 |
| 1985 | 25.1°C | 20.3°C | 15.5°C | 30.3°C | 7.4°C | 52 mm | 81% | 1.9 m/s | 5.4 |
| 1984 | 26.4°C | 20.0°C | 13.7°C | 32.4°C | 4.2°C | 18 mm | 71% | 2.1 m/s | 5.4 |
| 1983 ❄️ | 23.3°C | 17.3°C | 11.3°C | 28.8°C | 4.0°C | 17 mm | 78% | 2.2 m/s | — |
| 1982 | 25.2°C | 19.6°C | 14.1°C | 31.4°C | 5.7°C | 112 mm | 80% | 1.9 m/s | — |
| 1981 | 28.6°C | 22.9°C | 17.2°C | 33.9°C | 8.3°C | 65 mm | 75% | 1.8 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 26.1°C with lows near 14.9°C (mean 20.5°C), based on 45 years of NASA POWER data.
April averages 90 mm of rainfall in Baytown, one of the drier months. The wettest on record was 273 mm in 2009.
The hottest April reached 34.7°C in 2006. The coldest dipped to -0.1°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.7°C. Daytime highs moved from 25.7°C to 27.3°C and overnight lows from 14.4°C to 16.1°C over the same span.
April is close to Baytown's year-round average and one of the drier months, so plan for around 26.1°C daytime highs and 14.9°C at night.
Not quite — April is the 6th coolest month in Baytown, averaging 20.5°C.
For April in Baytown, pack light layers you can adjust through the day, with typical highs of 26.1°C and lows of 14.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 78% — quite humid.
Average wind speed in April is 1.9 m/s. The windiest April on record averaged 2.5 m/s (2011).
The wettest April on record was 2009 with 273 mm. On average, April sees 90 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 Baytown 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.
