Next 7 departures
- TueOct 13
ClearNo significant weather expected. Temperatures 79–87°F along the way.
Along the way
Checkpoint · arrival Weather · temperature San Antonio7 AM CDT Mostly cloudy79°F Mathis8:30 AM CDT Partly sunny79°F Kingsville9:15 AM CDT Mostly sunny81°F Raymondville10:30 AM CDT Mostly sunny86°F Harlingen10:45 AM CDT Mostly sunny87°F South Padre Island11:45 AM CDT Partly sunny85°F - WedOct 14
ClearNo significant weather expected. Temperatures 78–87°F along the way.
Along the way
Checkpoint · arrival Weather · temperature San Antonio7 AM CDT Mostly cloudy78°F Mathis8:30 AM CDT Mostly sunny80°F Kingsville9:15 AM CDT Mostly sunny83°F Raymondville10:30 AM CDT Mostly sunny86°F Harlingen10:45 AM CDT Mostly sunny87°F South Padre Island11:45 AM CDT Mostly sunny84°F - ThuOct 15
ClearNo significant weather expected. Temperatures 73–83°F along the way.
Along the way
Checkpoint · arrival Weather · temperature San Antonio7 AM CDT Partly sunny73°F Mathis8:30 AM CDT Mostly sunny77°F Kingsville9:15 AM CDT Mostly sunny80°F Raymondville10:30 AM CDT Sunny83°F Harlingen10:45 AM CDT Mostly sunny83°F South Padre Island11:45 AM CDT Sunny82°F - FriOct 16
CautionGusts to 35 mph near San Antonio around 7 AM CDT.
Along the way
Checkpoint · arrival Weather · temperature San Antonio7 AM CDT Partly sunny70°F Mathis8:30 AM CDT Partly sunny73°F Kingsville9:15 AM CDT Slight chance of light rain showers77°F Raymondville10:30 AM CDT Chance of light rain showers79°F Harlingen10:45 AM CDT Chance of light rain showers80°F South Padre Island11:45 AM CDT Chance of light rain showers81°F - SatOct 17
SevereChance of thunderstorms near South Padre Island around 11:45 AM CDT. Also at 5 other checkpoints.
Along the way
Checkpoint · arrival Weather · temperature San Antonio7 AM CDT Partly sunny62°F Mathis8:30 AM CDT Mostly sunny65°F Kingsville9:15 AM CDT Partly sunny68°F Raymondville10:30 AM CDT Chance of light rain showers70°F Harlingen10:45 AM CDT Chance of light rain showers71°F South Padre Island11:45 AM CDT Chance of thunderstorms75°F - SunOct 18
ClearNo significant weather expected. Temperatures 59–75°F along the way.
Along the way
Checkpoint · arrival Weather · temperature San Antonio7 AM CDT Mostly sunny59°F Mathis8:30 AM CDT Mostly sunny62°F Kingsville9:15 AM CDT Slight chance of light rain showers65°F Raymondville10:30 AM CDT Slight chance of light rain showers69°F Harlingen10:45 AM CDT Slight chance of light rain showers70°F South Padre Island11:45 AM CDT Chance of light rain showers75°F - MonOct 19
ClearNo significant weather expected. Temperatures 62–78°F along the way.
Along the way
Checkpoint · arrival Weather · temperature San Antonio7 AM CDT Mostly sunny62°F Mathis8:30 AM CDT Partly sunny66°F Kingsville9:15 AM CDT Partly sunny70°F Raymondville10:30 AM CDT Partly sunny74°F Harlingen10:45 AM CDT Partly sunny75°F South Padre Island11:45 AM CDT Chance of light rain showers78°F
The worst conditions expected at any checkpoint, timed to when you would reach it driving without stops. Levels use Road Travel’s driving-risk scale.
The route, stop by stop
Checkpoints in order, with driving time from San Antonio (no stops) and elevation. The forecast above is timed to these.
- San Antonio, TXStart 645 ftelevation
- Mathis, TXMile 108 · 1 h 33 min 164 ftelevation
- Kingsville, TXMile 157 · 2 h 17 min 58 ftelevation
- Raymondville, TXMile 229 · 3 h 32 min 32 ftelevation
- Harlingen, TXMile 252 · 3 h 52 min 39 ftelevation
- South Padre Island, TXMile 291 · 4 h 39 min 4 ftelevation
Typical weather by month
Average daily highs and lows, and monthly rain, at San Antonio, Harlingen and South Padre Island.
| Month | San Antonio 789 ft | Harlingen 38 ft | South Padre Island Port Isabel station · 17 ft | |||
|---|---|---|---|---|---|---|
| High / low °F | Precip (in) | High / low °F | Precip (in) | High / low °F | Precip (in) | |
| Jan | 63° / 41° | 2.0 | 72° / 51° | 1.2 | 69° / 52° | 1.4 |
| Feb | 68° / 45° | 1.7 | 76° / 55° | 1.2 | 72° / 56° | 1.2 |
| Mar | 74° / 52° | 2.3 | 81° / 60° | 1.5 | 76° / 61° | 1.7 |
| Apr | 80° / 58° | 2.4 | 86° / 66° | 2.3 | 81° / 67° | 1.6 |
| May | 87° / 66° | 4.4 | 91° / 72° | 2.7 | 86° / 73° | 2.4 |
| Jun | 92° / 73° | 3.3 | 95° / 76° | 2.4 | 90° / 76° | 3.1 |
| Jul | 95° / 75° | 2.4 | 97° / 77° | 2.4 | 91° / 77° | 2.3 |
| Aug | 96° / 75° | 2.1 | 98° / 77° | 2.1 | 92° / 77° | 1.9 |
| Sep | 90° / 70° | 3.9 | 93° / 74° | 5.8 | 89° / 74° | 6.2 |
| Oct | 82° / 60° | 3.8 | 88° / 67° | 3.1 | 85° / 69° | 3.9 |
| Nov | 72° / 50° | 2.1 | 80° / 59° | 2.0 | 78° / 61° | 1.8 |
| Dec | 65° / 42° | 2.0 | 73° / 53° | 1.6 | 71° / 54° | 1.4 |
NOAA NCEI U.S. Climate Normals, 1991–2020: SAN ANTONIO INTL AP (USW00012921, 789 ft); HARLINGEN (USC00413943, 38 ft); PORT ISABEL (USC00417179, 17 ft). Precipitation is the monthly total of rain and melted snow, in inches. “—” means the station does not publish that normal.
Road conditions
Closures and chain rules change by the hour, so we link to the official reports for Texas rather than repeat them.
- Texas · TxDOTDriveTexas road conditions
Check the official National Weather Service forecast and each state's road report before you leave.
Get alerts timed to where you’ll be when you get there
Road Travel plans the drive from San Antonio to South Padre Island with the forecast at every stretch for the hour you’ll reach it, then warns you about weather ahead while you drive.
Questions about this drive
How long is the drive from San Antonio to South Padre Island?
291 miles, about 4½ hours of driving without stops, by way of I-37, I-69E and US-77. Fuel, food and rest stops add to that.
What is the wettest month in South Padre Island?
September. The nearest long-term NOAA station, Port Isabel (17 ft), averages 6.2 inches of rain and melted snow that month (1991–2020 normals).
How cold is South Padre Island in January?
The nearest long-term NOAA station, Port Isabel (17 ft), averages a high of 69°F and a low of 52°F in January (1991–2020 normals).