May is one of the warmer months of the year in New Braunfels, with average highs near 31.8°C and lows around 19.2°C (mean 25.5°C). It is a relatively wet time of year, averaging 107 mm of rainfall and 70% relative humidity across the period.
May is one of the warmer months of the year in New Braunfels. Across 45 years of records, the warmest May in New Braunfels was 2022 — when the month averaged 29.1°C — while the coldest was 1992 at 21.6°C. Typical May days reach 31.8°C with nights near 19.2°C. The long-term trend is warming, about 0.3°C per decade.
May is a relatively wet time of year in New Braunfels, averaging 107 mm of rainfall. The wettest May on record was 2015 with 266 mm, while the driest was 1998 at 12 mm.
Relative humidity in New Braunfels during May averages 70%. The most humid May was 2015 at 87%, and the least humid was 1984 at 56%.
May receives about 5.8 kWh/m²/day of solar energy in New Braunfels. The sunniest Mays were 2006 and 2018 at 6.7 kWh/m²/day, and the cloudiest was 2015 at 4.6.
Average wind speed in New Braunfels during May is 3 m/s. The windiest May was 1996 at 4.1 m/s, while the calmest was 2023 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.1°C | 25.2°C | 26.0°C | 25.2°C | 26.3°C | +1.2°C |
| Avg High | 31.8°C | 31.4°C | 32.4°C | 31.2°C | 32.3°C | +0.5°C |
| Avg Low | 18.5°C | 19.0°C | 19.6°C | 19.2°C | 20.4°C | +1.9°C |
| Avg Rain | 107 mm | 112 mm | 69 mm | 129 mm | 128 mm | +21 mm |
May temperatures in New Braunfels have risen by about 1.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 6.6°C (2013) to a record high of 42.2°C (1984).
Rainfall in May is a relatively wet time of year, averaging 107 mm, with a wettest year of 266 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°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 New Braunfels
May is one of the best times to visit New Braunfels. Expect days averaging 31.8°C and nights around 19.2°C (mean 25.5°C) — warmer than New Braunfels's yearly average — with higher rainfall (107 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 | 33.9°C | 27.2°C | 20.5°C | 39.3°C | 14.4°C | 126 mm | 66% | 2.9 m/s | 6.1 |
| 2024 | 35.3°C | 28.9°C | 22.5°C | 41.1°C | 17.7°C | 73 mm | 70% | 2.8 m/s | 4.9 |
| 2023 | 28.6°C | 23.9°C | 19.3°C | 33.5°C | 12.3°C | 153 mm | 82% | 1.8 m/s | 5.3 |
| 2022 🔥 | 36.3°C | 29.1°C | 21.9°C | 39.8°C | 15.9°C | 33 mm | 63% | 3.5 m/s | 6.4 |
| 2021 | 28.5°C | 23.8°C | 19.1°C | 33.0°C | 13.4°C | 212 mm | 82% | 2.9 m/s | 5.3 |
| 2020 | 31.0°C | 24.9°C | 18.8°C | 36.6°C | 13.3°C | 172 mm | 72% | 2.8 m/s | 6.4 |
| 2019 | 30.3°C | 25.2°C | 20.1°C | 35.1°C | 12.5°C | 121 mm | 78% | 3.3 m/s | 5.1 |
| 2018 | 34.7°C | 27.6°C | 20.5°C | 39.2°C | 14.4°C | 49 mm | 64% | 2.8 m/s | 6.7 |
| 2017 | 32.0°C | 25.1°C | 18.1°C | 36.0°C | 10.9°C | 71 mm | 66% | 3.2 m/s | 5.5 |
| 2016 | 28.9°C | 24.0°C | 19.0°C | 33.4°C | 12.3°C | 210 mm | 80% | 2.8 m/s | 5.1 |
| 2015 🌧️ | 27.9°C | 24.1°C | 20.2°C | 31.1°C | 10.9°C | 266 mm | 87% | 3.1 m/s | 4.6 |
| 2014 | 30.7°C | 24.2°C | 17.6°C | 36.1°C | 10.0°C | 177 mm | 66% | 3.4 m/s | 6.1 |
| 2013 | 30.4°C | 24.2°C | 18.0°C | 36.8°C | 6.6°C | 124 mm | 70% | 3.4 m/s | 5.6 |
| 2012 | 31.3°C | 25.4°C | 19.6°C | 36.0°C | 14.0°C | 153 mm | 73% | 2.7 m/s | 6.5 |
| 2011 | 34.2°C | 26.7°C | 19.2°C | 40.3°C | 8.2°C | 28 mm | 59% | 3.9 m/s | 6.1 |
| 2010 | 31.1°C | 25.4°C | 19.6°C | 35.7°C | 11.3°C | 96 mm | 72% | 3 m/s | 5.8 |
| 2009 | 32.5°C | 26.1°C | 19.7°C | 38.0°C | 12.0°C | 68 mm | 67% | 2.8 m/s | 6.1 |
| 2008 | 34.1°C | 27.1°C | 20.1°C | 38.9°C | 14.1°C | 32 mm | 60% | 3.4 m/s | 6.4 |
| 2007 | 28.2°C | 23.4°C | 18.6°C | 31.6°C | 14.5°C | 131 mm | 80% | 2.6 m/s | 5.2 |
| 2006 | 33.3°C | 26.4°C | 19.5°C | 37.5°C | 13.4°C | 74 mm | 64% | 3.2 m/s | 6.7 |
| 2005 | 31.4°C | 24.9°C | 18.4°C | 37.8°C | 8.8°C | 97 mm | 68% | 2.7 m/s | 5.7 |
| 2004 | 29.2°C | 23.8°C | 18.5°C | 39.4°C | 8.9°C | 55 mm | 79% | 3.2 m/s | 5.6 |
| 2003 | 36.1°C | 28.8°C | 21.5°C | 40.1°C | 18.7°C | 12 mm | 59% | 3.2 m/s | 5.6 |
| 2002 | 34.1°C | 27.0°C | 19.9°C | 39.7°C | 11.7°C | 48 mm | 61% | 3.7 m/s | 6 |
| 2001 | 31.7°C | 25.5°C | 19.2°C | 37.4°C | 12.8°C | 81 mm | 71% | 2.9 m/s | 6.4 |
| 2000 | 32.9°C | 26.9°C | 20.8°C | 38.4°C | 14.2°C | 88 mm | 71% | 3.4 m/s | 5.8 |
| 1999 | 33.1°C | 26.3°C | 19.6°C | 37.1°C | 12.7°C | 81 mm | 67% | 2.9 m/s | 5.9 |
| 1998 | 37.3°C | 28.8°C | 20.3°C | 41.6°C | 14.2°C | 12 mm | 56% | 3.2 m/s | 6.4 |
| 1997 | 28.4°C | 23.0°C | 17.5°C | 32.9°C | 11.3°C | 127 mm | 79% | 2.4 m/s | 5.7 |
| 1996 | 35.3°C | 28.4°C | 21.4°C | 39.7°C | 11.1°C | 44 mm | 64% | 4.1 m/s | 5.9 |
| 1995 | 33.2°C | 26.3°C | 19.4°C | 39.4°C | 13.0°C | 172 mm | 66% | 3.1 m/s | 5.5 |
| 1994 | 28.5°C | 23.5°C | 18.5°C | 34.6°C | 11.5°C | 138 mm | 81% | 2.2 m/s | 5.4 |
| 1993 | 28.6°C | 22.8°C | 16.9°C | 32.8°C | 12.3°C | 177 mm | 75% | 2.8 m/s | 6 |
| 1992 ❄️ | 26.3°C | 21.6°C | 16.8°C | 31.5°C | 8.4°C | 215 mm | 85% | 2.4 m/s | 5.4 |
| 1991 | 31.2°C | 25.5°C | 19.8°C | 36.7°C | 10.5°C | 87 mm | 75% | 2.8 m/s | 5.6 |
| 1990 | 31.8°C | 25.7°C | 19.5°C | 37.4°C | 12.8°C | 67 mm | 71% | 3.3 m/s | 5.7 |
| 1989 | 35.1°C | 27.7°C | 20.2°C | 40.7°C | 15.8°C | 41 mm | 62% | 3.5 m/s | 6.2 |
| 1988 | 32.7°C | 25.0°C | 17.3°C | 37.6°C | 11.7°C | 66 mm | 60% | 2.8 m/s | 6 |
| 1987 | 29.6°C | 24.4°C | 19.3°C | 34.4°C | 15.7°C | 223 mm | 77% | 2.4 m/s | 5.2 |
| 1986 | 30.6°C | 24.5°C | 18.5°C | 34.9°C | 12.4°C | 161 mm | 71% | 2.9 m/s | 4.7 |
| 1985 | 31.7°C | 25.1°C | 18.4°C | 38.5°C | 14.2°C | 64 mm | 69% | 2.6 m/s | 6.3 |
| 1984 | 33.8°C | 26.2°C | 18.6°C | 42.2°C | 11.2°C | 51 mm | 56% | 3.4 m/s | 6.2 |
| 1983 | 32.2°C | 25.0°C | 17.8°C | 38.8°C | 11.4°C | 104 mm | 65% | 3.2 m/s | — |
| 1982 | 29.8°C | 24.0°C | 18.1°C | 35.7°C | 10.2°C | 134 mm | 76% | 2.9 m/s | — |
| 1981 | 31.0°C | 24.4°C | 17.9°C | 37.8°C | 9.5°C | 122 mm | 70% | 3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 31.8°C with lows near 19.2°C (mean 25.5°C), based on 45 years of NASA POWER data.
May averages 107 mm of rainfall in New Braunfels, a relatively wet time of year. The wettest on record was 266 mm in 2015.
The hottest May reached 42.2°C in 1984. The coldest dipped to 6.6°C in 2013.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.7°C. Daytime highs moved from 31.7°C to 32.5°C and overnight lows from 18.2°C to 20.7°C over the same span.
May is one of the warmer months of the year in New Braunfels and a relatively wet time of year, so plan for around 31.8°C daytime highs and 19.2°C at night.
Not quite — May is the 8th coolest month in New Braunfels, averaging 25.5°C.
For May in New Braunfels, pack light, breathable clothing and sun protection, with typical highs of 31.8°C and lows of 19.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 70% — moderately humid.
Average wind speed in May is 3 m/s. The windiest May on record averaged 4.1 m/s (1996).
The wettest May on record was 2015 with 266 mm. On average, May sees 107 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 New Braunfels behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
