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Houston in May: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Houston in May will be like? Take a look at our weather guide for Houston, based on historical data.
Check flight prices to Houston on Avionero:
May

Weather in Houston in May 2025

Good Weather
Warm
🌧️
Rainy
Planning a trip to Houston in May? You are in luck! The weather is generally good, with an average maximum temperature of +86°F and approximately 4 sunny days. Just be prepared for some rain, as there are usually around 12 rainy days and 122 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+86°F
Avg. max. temperature
+46°F
Min.
+97°F
Max.
122 mm
Total precipitation
74%
Avg. humidity
3 m/s
Avg. wind
4 ☀️
Sunny Days
9 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Houston has good weather in May.

Average temperature in Houston in May

Here are the expected maximum, average and minimum temperatures in Houston for May based on the historical data.
Last Year
Historical Data

Going from a maximum of +91°F during the day to a minimum of +61°F during the night, the temperature in May averages around +86°F.

The average maximum temperature goes up 6% by the end of the month, compared with the beginning of the month, from +86°F to +88°F.

Is Houston warm or cold in May?

Houston is typically warm in May.

Maximum temperatures go up compared to the previous month from +79°F to +86°F. The minimum temperature also goes up from +61°F to +70°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

Take a look at how May is compared to other months in Houston:

Climate in Houston in May

Houston weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+79°F+86°F+90°F
Min. temperature
+34°F+46°F+54°F
Max. temperature
+93°F+97°F+104°F
Rainfall
99 mm122 mm119 mm
Wind
3 m/s3 m/s2 m/s
Humidity
72%74%74%
Air pressure
1013 HPa1013 HPa1013 HPa
Sunny days
644
Cloudy days
1096
Rainy days
111212
Snowy days
000

May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +79°F to +86°F during the day. Prepare for more rain. Average rainfall goes from 99 mm to 122 mm. Humidity rises from 72% to 74%. The average wind speed doesn’t change much during May, staying around 3 m/s. The days becoming less sunny, going from 6 sunny days in April to 4 in May.

June brings much the same weather, it remains good.

Wind

Wind speed in Houston in May based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Houston is gradually increasing during May, going from 3 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Houston based on historical data.
Last Year
Historical Data
Typically, there is a 58% chance of rain on an average day in May, with total rainfall of approximately 168 mm. The maximum amount of rainfall per day is around 59 mm, which is considered heavy rain. May is a pretty wet month with over 18 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
May is one of the rainiest months in Houston, here is a comparison with other months, total mm:
Houston wettest month is May, where a typical day has a 39% chance of precipitation and 122 mm of rainfall per day. February, on the other hand, is the driest month with a mere 41% chance of precipitation and 79 mm of rainfall per day.

How was the weather last May in Houston?

This is the weather in Houston in May 2023:
1 May
☀️
+86°F
2 May
🌫️
+82°F
3 May
☀️
+86°F
4 May
☁️
+83°F
5 May
🌫️
+92°F
6 May
🌫️
+90°F
7 May
🌫️
+84°F
8 May
🌫️
+85°F
9 May
🌫️
+77°F
10 May
🌫️
+76°F
11 May
🌫️
+88°F
12 May
🌫️
+89°F
13 May
🌫️
+82°F
14 May
🌫️
+84°F
15 May
☁️
+86°F
16 May
☀️
+88°F
17 May
☁️
+86°F
18 May
☀️
+90°F
19 May
☁️
+92°F
20 May
☁️
+89°F
21 May
☁️
+86°F
22 May
☁️
+85°F
23 May
☁️
+89°F
24 May
☁️
+88°F
25 May
☁️
+86°F
26 May
☀️
+89°F
27 May
☀️
+89°F
28 May
☁️
+89°F
29 May
☁️
+86°F
30 May
☁️
+89°F
31 May
☁️
+88°F
In May 2023 Houston had 6 sunny days, 14 cloudy days, and 0 rainy days. The average maximum temperature was +86°F, with an absolute maximum of +91°F and a minimum of +75°F. The average humidity was 79%, with a maximum of 100% and a minimum of 39%. The average wind speed was 4 m/s, with a maximum of 16 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change Over the Years

This is how Houston climate has changed over the last 43 years.

The climate in Houston in May has not changed that much over the last 43 years.

The average temperature was the lowest in 1979 (+75°F) and the highest in 2012 (+83°F). The driest year was 2011 with only 709 mm of rainfall, and the wettest year was 2021 with 2058 mm.

FAQ

Frequently asked questions about the weather in Houston in May:

Is May a good time to visit Houston?

May is a really good time to go to Houston. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Houston.

Can you sunbathe in Houston in May?

May is warm in Houston. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Houston rainy in May?

Houston is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Houston in May?

Usually, it’s not very sunny in Houston in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in USA

Check out the weather for other cities in USA.

Monthly weather in Houston

Source of the data

For this page, we’ve looked at the typical weather in Houston, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.