South Padre Island, Texas climate: Normal weather by month, frost dates and records
South Padre Island's normal year runs from 55°F January nights to 90°F August afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 23.7°C, January lows of 13°C, August highs of 32°C.
- NOAA stationSouth Padre Island
- Station IDUSC00418487
- Location26.08°N 97.10°W
- Elevation5 ft (2 m)
- Population2,076
On October 14, the normal high in South Padre Island is 85°F and the normal low 74°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for South Padre Island.
- Jan 68° 55°
- Feb 71° 57°
- Mar 75° 63°
- Apr 79° 69°
- May 84° 74°
- Jun 88° 78°
- Jul 89° 79°
- Aug 90° 79°
- Sep 89° 77°
- Oct 85° 73°
- Nov 78° 65°
- Dec 72° 57°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in South Padre Island each month?
August is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 55°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 68°F | 55°F | 61.4°F | – | <1 | <1 | 10 h 40 min |
| February | 71°F | 57°F | 64.3°F | – | <1 | <1 | 11 h 20 min |
| March | 75°F | 63°F | 68.5°F | – | <1 | <1 | 12 h |
| April | 79°F | 69°F | 73.9°F | – | <1 | <1 | 12 h 50 min |
| May | 84°F | 74°F | 79.2°F | – | 1 | <1 | 13 h 20 min |
| June | 88°F | 78°F | 82.9°F | – | 6 | <1 | 13 h 50 min |
| July | 89°F | 79°F | 83.6°F | – | 12 | <1 | 13 h 40 min |
| August | 90°F | 79°F | 84.6°F | – | 19 | <1 | 13 h 10 min |
| September | 89°F | 77°F | 82.9°F | – | 14 | <1 | 12 h 20 min |
| October | 85°F | 73°F | 78.9°F | – | 3 | <1 | 11 h 40 min |
| November | 78°F | 65°F | 71.5°F | – | <1 | <1 | 10 h 50 min |
| December | 72°F | 57°F | 64.4°F | – | <1 | <1 | 10 h 30 min |
| Year (annual) | 81°F | 69°F | 74.7°F | – | 55 | <1 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 20°C | 13°C | 16.3°C |
| February | 22°C | 14°C | 17.9°C |
| March | 24°C | 17°C | 20.3°C |
| April | 26°C | 20°C | 23.3°C |
| May | 29°C | 23°C | 26.2°C |
| June | 31°C | 26°C | 28.3°C |
| July | 32°C | 26°C | 28.7°C |
| August | 32°C | 26°C | 29.2°C |
| September | 32°C | 25°C | 28.3°C |
| October | 29°C | 23°C | 26.1°C |
| November | 26°C | 18°C | 21.9°C |
| December | 22°C | 14°C | 18.0°C |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00418487; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit South Padre Island?
Normal highs sit between 65°F and 85°F in January, February, March, April, May, October, November and December.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00418487.
How hot and how cold does it get in South Padre Island?
In a normal year in South Padre Island, 55 days a year reach 90°F and nights almost never fall to freezing.
- Days at 90°F or more
- 55a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- fewer than 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00418487.
How sunny is South Padre Island?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around South Padre Island, 4.8 kWh per square metre a day. August is the sunniest month (87%) and December the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 3.1 |
| February | 70% | 3.7 |
| March | 73% | 4.6 |
| April | 77% | 5.4 |
| May | 82% | 6.0 |
| June | 86% | 6.5 |
| July | 86% | 6.5 |
| August | 87% | 6.2 |
| September | 80% | 5.2 |
| October | 83% | 4.6 |
| November | 76% | 3.5 |
| December | 68% | 2.8 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does South Padre Island need?
A normal year in South Padre Island brings 403 heating degree days, 92% fewer than the median U.S. place (5,373), and 3,949 cooling degree days, 4.4 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 9,042 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 149 | 38 |
| February | 82 | 62 |
| March | 35 | 145 |
| April | 5 | 272 |
| May | 0 | 440 |
| June | 0 | 535 |
| July | 0 | 577 |
| August | 0 | 606 |
| September | 0 | 537 |
| October | 1 | 430 |
| November | 26 | 219 |
| December | 107 | 88 |
| Year (annual) | 403 | 3,949 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00418487. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does South Padre Island's climate compare?
South Padre Island is warmer than 313 of the other 320 places with their own NOAA record in Texas. Across the 7,247 U.S. stations with normals, its annual mean of 74.7°F is warmer than 99%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about South Padre Island's climate
What is the coldest month in South Padre Island?
January, with a normal high of 68°F and a normal low of 55°F. The warmest is August (90°F by day, 79°F at night).
What plant hardiness zone is South Padre Island in?
The USDA's 2023 map puts South Padre Island in zone 10b in ZIP code 78597.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Port Isabel, TX16 miles from this station, 74.8°F a year
- Brownsville, TX23 miles from this station, 76.2°F a year
- Harlingen, TX35 miles from this station, 74.9°F a year
- Port Mansfield, TX39 miles from this station, 73.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made