USA Houston Weather in September — Climate Guide
September in Houston is moderate
September is moderate for Houston.
Hurricane risk still high — Ike 2008 + Harvey 2017 both September storms. Texans NFL season opens (8 home games Sep-Jan, hotels +30-50% game weekends). Astros playoff push. 32°C cooling but still humid.
Travel score
Houston September Weather Stats
Avg High
32°C
Avg Low
22°C
Rainy Days
8
130mm total
Sunshine
9h
Daily avg
Humidity
73%
high
UV Index
9
Very high
Wind
12 km/h
Gusts 50
Sea Temp
29°C
warm
Crowds
Moderate
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
28 μg/m³
PM10
50 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
36°C
Nighttime
23°C
Humidity and wind affect how the actual temperature feels.
Wind
12 km/h
Max gust 50 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Texans NFL season opens
- Astros playoff push (Oct possible)
- Cooling from peak summer
- Daylight 12h 30min
Cons
- HURRICANE PEAK (Ike + Harvey precedent)
- 130mm rain peak
- Texans home game weekends hotels +30-50%
September Events & Festivals
- Hurricane peak Aug-Sep (Hurricane Ike 2008 + Harvey Aug 2017)
- Houston Texans NFL season opens
- Astros playoff push
Houston in September — Full Picture
Hurricane risk still high — Ike 2008 + Harvey 2017 both September storms. Texans NFL season opens (8 home games Sep-Jan, hotels +30-50% game weekends). Astros playoff push. 32°C cooling but still humid.
What to Wear & What to Pack
Hot but cooling. T-shirts + shorts + light layers.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
27.7°C
17°C
8.7/mo
Summer (Jun·Jul·Aug)
34.7°C
24.7°C
8/mo
Autumn (Sep·Oct·Nov)
Current27.7°C
17°C
8/mo
Winter (Dec·Jan·Feb)
19°C
9°C
8/mo
Houston Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 18° | 8° | 8d·90mm | 5h | 70% | 4 | Quiet | Low season | |
| 20° | 10° | 8d·80mm | 6h | 70% | 5 | Busy | Peak | |
| March (Best) | 24° | 13° | 8d·80mm | 7h | 70% | 7 | Busy | Peak |
| April (Best) | 28° | 17° | 9d·95mm | 8h | 70% | 9 | Moderate | Shoulder |
| 31° | 21° | 9d·130mm | 9h | 72% | 10 | Busy | Peak | |
| 34° | 24° | 9d·120mm | 10h | 73% | 11 | Busy | Shoulder | |
| 35° | 25° | 7d·95mm | 10h | 73% | 11 | Moderate | Shoulder | |
| 35° | 25° | 8d·105mm | 9h | 74% | 10 | Quiet | Low season | |
| 32° | 22° | 8d·130mm | 9h | 73% | 9 | Moderate | Shoulder | |
| October (Best) | 28° | 17° | 8d·110mm | 9h | 70% | 7 | Busy | Peak |
| November (Best) | 23° | 12° | 8d·90mm | 7h | 70% | 5 | Busy | Shoulder |
| 19° | 9° | 8d·100mm | 6h | 70% | 4 | Moderate | Shoulder |
View Other Months
Houston September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Houston?
Houston in September is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Houston in September?
Houston September averages a high of 32°C and a low of 22°C.
Does it rain much in Houston in September?
Houston September averages 130mm of rainfall over about 8 rainy days.
What should I wear in Houston in September?
Hot but cooling. T-shirts + shorts + light layers.
What time are sunrise and sunset in Houston in September?
Houston September sunrise is 07:00 and sunset is 19:25, with 12h 25min of daylight.
What's the air quality like in Houston in September?
Houston September air quality (AQI) averages 75, rated Moderate. PM2.5 averages 28μg/m³.
What activities are recommended in Houston in September?
In September, Houston is great for NASA Space Center, Texans NFL games, Astros games.
Is September peak season in Houston?
Houston September crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Houston
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.