South Padre Island, TX weather in September
South Padre Island is hot and oppressively humid in September, with frequent rain: highs average 89°F and nights drop to about 77°F. Expect about 11 wet days. This is the peak of the warm season in South Padre Island.
- Normal high
- 89°F
- Normal low
- 77°F
- Wet days
- 11
- 5.7 in total
- Muggy days
- 28
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 90°F | 88°F |
| Normal low | 78°F | 76°F |
| Chance of a wet day | 34% | 32% |
| Sunrise / sunset | 7:08 am / 7:48 pm | 7:20 am / 7:16 pm |
| Daylight | 12.7 h | 11.9 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical September day
- 6 am75°Fdew point 73°F
- 9 am83°Fdew point 74°F
- Noon88°Fdew point 72°F
- 3 pm88°Fdew point 72°F
- 6 pm84°Fdew point 73°F
- 9 pm79°Fdew point 74°F
NOAA hourly normals (local standard time) from Brownsville (20 mi away); average wind 8 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph17 of 30
- Hot dayshigh 90°F or more13 of 30
- Muggy daysdaily mean dew point 65°F or more28 of 30
- Wet daysat least 0.01 in of rain or melted snow11 of 30
- Notable rainat least 0.10 in8 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 5.7 in; a dry September brings about 3.6 in and a wet one about 7.8 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 2 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202016: average high 91°F
- Coolest September1994: average high 86°F
- Wettest September2003: 15.1 in
- Driest September2000: 0.7 in
- Highest reading99°F (September 14, 2008)
- Lowest reading58°F (September 22, 1995)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 90°F | 89°F | 85°F |
| Normal low | 79°F | 77°F | 73°F |
| Wet days | 6 | 11 | 8 |
| Comfortable days | 0 | 0 | 2 |
| Daylight | 13.0 h | 12.3 h | 11.5 h |
Highs change by -1°F from August and -4°F into October.
Nearby alternatives in September
- Warmer: McAllen, TX66 mi · high 94°F · 8 wet days
- Drier: McAllen, TX66 mi · high 94°F · 8 wet days
How South Padre Island ranks in September
- Normal high75th warmest of 378 cities; 22nd of 38 in Texas
- Wet days341st driest of 378
- Comfortable days313th most of 342
What to pack for South Padre Island in September
- Light, breathable clothing – highs near 89°F and about 28 muggy days
- A rain jacket or umbrella – rain on about 11 days
- A swimsuit – about 17 beach days
Heating and cooling
September has 0 heating degree days and 537 cooling degree days (base 65°F), 12% of the year's total heating and cooling demand.
Questions
How hot is South Padre Island in September?
The normal high is 89°F and the normal low is 77°F. From 1991 to 2020 the hottest September reading was 99°F (September 14, 2008).
Does it rain a lot in South Padre Island in September?
About 11 days in September have at least 0.01 in of precipitation, and the normal total is 5.7 in. The wettest September in 1991-2020 was in 2003 (15.1 in); the driest was in 2000 (0.7 in).
Is September a good time to visit South Padre Island?
September ranks 12th of 12 months on our comfort score for South Padre Island (38 out of 100). It has almost no comfortable days and about 13 days at 90°F or hotter. The best months are January, February and December.
Where the numbers come from
- Temperature: S Padre Is (USC00418487), 4.1 mi ESE of the city center, 5 ft . NOAA normals and daily records, 1991-2020.
- Rain and humidity and wind by hour: Brownsville (USW00012919), 20 mi SW of the city center, 23 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Port Isabel (USC00417179), 9.0 mi W of the city center, 17 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Port Isabel Cameron Airport (USW00012957), 12 mi WNW of the city center, 19 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Brownsville/S Padre Island Intl Airport (722500-12919), 21 mi SW of the city center, 19 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).