South Padre Island Weather
South Padre Island sits at the southern tip of Texas, and its subtropical climate is a big part of the draw. The weather here is warm nearly all year, the Gulf water stays swimmable for most of it, and rain is surprisingly rare compared to the rest of the Gulf Coast. This guide breaks down what to actually expect month by month — air temperature, water temperature, humidity, rainfall, and hurricane season — so you can plan (and pack) with confidence. If you are trying to decide when to come rather than what the weather feels like, our best time to visit guide compares crowds, pricing, and events season by season.
Climate
Subtropical
Warm and humid, semi-arid
Warmest Month
August
Avg high ~90°F
Coolest Month
January
Avg high ~68°F
Annual Rainfall
~27 inches
Wettest in September
South Padre Island Weather by Month
Here is the month-by-month breakdown of average air temperatures and Gulf water temperature. Air temperatures are 30-year climate normals; water temperatures are monthly averages. Use it to picture the day-to-day conditions during your stay.
| Month | Avg High | Avg Low | Gulf Water |
|---|---|---|---|
| January | 68°F | 55°F | 69°F |
| February | 71°F | 57°F | 68°F |
| March | 75°F | 63°F | 68°F |
| April | 79°F | 69°F | 72°F |
| May | 84°F | 74°F | 77°F |
| June | 88°F | 78°F | 82°F |
| July | 89°F | 79°F | 83°F |
| August | 90°F | 79°F | 84°F |
| September | 89°F | 77°F | 84°F |
| October | 85°F | 73°F | 81°F |
| November | 78°F | 65°F | 76°F |
| December | 72°F | 57°F | 72°F |
Weather Season by Season
Winter (December – February)
Winter is mild and dry. Daytime highs sit in the upper 60s to low 70s, and lows dip into the mid-50s — sweater weather by island standards, but far warmer than most of the country. Occasional cold fronts can push temperatures down for a day or two, then it bounces right back. The Gulf cools to the upper 60s, so swimming is for the brave, but the beach is perfect for long walks, shelling, and fishing. This mild, quiet stretch is exactly why Winter Texans settle in for months at a time.
Spring (March – May)
Spring is arguably the most comfortable weather of the year. Highs climb from the mid-70s in March to the mid-80s by May, humidity is still moderate, and rainfall is low. The water warms steadily — from the upper 60s in March to the upper 70s by late May — so swimming becomes comfortable as the season goes on. March brings spring-break energy and warm, breezy afternoons that are ideal for the beach and kite flying.
Summer (June – August)
Summer is hot, humid, and sunny. Highs run in the upper 80s to low 90s with matching humidity, though the Gulf breeze and warm 82–84°F water make it very manageable — that water is the whole point. Mornings and evenings are gorgeous, and the middle of the day is best spent in the water or the pool. Brief afternoon thunderstorms can pop up, usually clearing quickly. This is peak season for swimming and water sports.
Fall (September – November)
Early fall still feels like summer — warm air, warm water — but the crowds thin out. September is the wettest month of the year and the heart of tropical-storm season, so keep an eye on the forecast. By October and November the humidity eases, highs settle into the comfortable 70s and 80s, and the water stays swimmable well into November. Late fall is one of the best-kept secrets for pleasant weather with fewer people.
Gulf Water Temperature & Swimming
The Gulf of Mexico around South Padre Island is warm and shallow, which keeps water temperatures pleasant for a long stretch of the year. Water peaks in the low-to-mid 80s in August and September and bottoms out around 68°F in February and March. In practical terms, the swimming season runs from roughly March through December — during those months the water rarely drops below the upper 60s. In the coldest weeks of winter you can still wade and beachcomb comfortably; you just might want a wetsuit for extended time in the water.
Rainfall & Humidity
South Padre Island is drier than most of the Texas coast, averaging only about 27 inches of rain a year. Winter and early spring (roughly December through April) make up the dry season, while the wettest weather arrives in late summer and early fall, with September the rainiest month. Even then, rain tends to come as short, heavy downpours or afternoon thunderstorms rather than gray all-day rain — you can usually plan around it.
Humidity is the bigger factor in how the heat feels. Summer humidity is high, which can make 90°F feel hotter, but the near-constant sea breeze on the island keeps it more tolerable than the same temperature would feel inland. Spring and fall offer the best balance of warmth and comfort.
Hurricane Season
Atlantic hurricane season officially runs June 1 through November 30, with the highest probability of tropical activity along the Texas coast from August through October. The risk for any specific week is relatively low, and most systems pass well to the east. Modern forecasting gives several days of advance notice, so travelers are rarely caught off guard. If you are visiting in late summer or early fall, it is smart to keep an eye on the National Hurricane Center forecast and consider travel insurance — but there is no reason to let a small statistical chance keep you from a great trip.
What to Pack for the Weather
Whatever the season, the subtropical sun is strong — sunscreen, a hat, and sunglasses are essentials year-round. For spring through fall, pack light, breathable clothing, swimwear, and sandals. For winter and cooler evenings, add a light jacket or sweater. If your trip falls in the late-summer rainy stretch, a packable rain jacket or travel umbrella is worth the space. A reusable water bottle helps you stay hydrated in the heat, and a light beach cover-up handles the walk back from the sand. For a fuller checklist, our family travel tips cover packing with kids in mind.
South Padre Island Weather FAQ
What is the weather like on South Padre Island?
South Padre Island has a subtropical, semi-arid climate with warm weather year-round. Average high temperatures range from about 68°F in January to 90°F in August. Winters are mild, summers are hot and humid, and a steady Gulf breeze takes the edge off the heat. The island averages plenty of sunshine and only about 27 inches of rain a year.
What are the hottest and coldest months on South Padre Island?
August is the warmest month, with an average high near 90°F and overnight lows around 79°F. January is the coolest, with average highs around 68°F and lows in the mid-50s. Even in winter, daytime temperatures are usually comfortable for walking the beach.
How warm is the Gulf water at South Padre Island?
Gulf water temperature ranges from about 68°F in late winter (February–March) to roughly 84°F in late summer (August–September). The water is comfortable for swimming from roughly March through December, peaking in the low-to-mid 80s during summer.
Does it rain a lot on South Padre Island?
No. South Padre Island averages only about 27 inches of rain per year, which is drier than most of the Gulf Coast. September is the wettest month, and winter through early spring is the driest stretch. When rain does come in summer, it usually arrives as brief afternoon showers or thunderstorms rather than all-day washouts.
When is hurricane season on South Padre Island?
Atlantic hurricane season runs June 1 through November 30, with the highest risk for the Texas Gulf Coast from August through October. The odds of a storm affecting any single week are low, and modern forecasting provides several days of advance warning. It is worth keeping an eye on the forecast in late summer, but it should not stop you from visiting.
What should I pack for South Padre Island weather?
Pack sunscreen, a hat, and sunglasses year-round — the subtropical sun is strong. Bring light, breathable clothing and swimwear for spring through fall. For winter and cooler evenings, add a light jacket or sweater. If you are visiting in late summer or early fall, toss in a packable rain layer for the occasional afternoon shower.
Data Sources
Average high and low air temperatures are 30-year U.S. Climate Normals (1991–2020) from NOAA's National Centers for Environmental Information, via Current Results. Monthly Gulf water temperatures and rainfall figures are from Climates to Travel. Hurricane season dates are defined by the NOAA National Hurricane Center.