Houston Weather: September
 |
Average Day Temperature: | 93.3°F |
|
Average Night Temperature: | 79.2°F |
|
Sea Water Temperature: | 87.8°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 11.9 - 12.7 hours | |
|
Number of Rainy Days: | 5 days |
| Precipitation Totals: | 3.7 in | |
| detailed information | ||
forecast
| Houston |
Temperature
| Houston |
Air Temperature in September, °F
The highest day temperature in September 2025 was 103°F. The lowest night temperature was 69°F. The average values for day and night temperatures during September were 95.8°F и 78.4°F respectivly.
Houston Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Houston was 88.7°F. The maximum and minimum values were 86.8°F and 91.2°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Houston is 3.7 in.
The average wind speed in September is 6.9 mph. It makes September the most windless month of the year for Houston.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Houston in September is 7.6 hours.
Houston on the Weather Map
| Chicago |  |
0 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston | |
+46 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach | |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0300 |  |
44°F | S 9 mph |
| 0600 |  |
42°F | S 11 mph |
| 0900 | |
42°F | SW 5 mph |
| 1200 | |
44°F | NW 2 mph |
| 1500 | |
48°F | SE 1 mph |
| 1800 | |
48°F | NW 1 mph |
| 2100 | |
48°F | NW 2 mph |
| 0000 | |
50°F | N 2 mph |