The best times to visit Port Arthur for ideal weather are
February 19th to May 6th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Port Arthur Travel Guide
Other Port Arthur Travel Info
Weather in Port Arthur
Temperature
Average temperatures in Port Arthur vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some hot weeks in the summer, with a chance of precipitation throughout most of the year. The area is less temperate than some — in the 30th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Port Arthur, the hottest months are August, July, and then June. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 95.7°F (35.4°C) with temperatures rarely dropping below 75.4°F (24.1°C) at night.
Port Arthur Temperatures (Fahrenheit)
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Port Arthur Temperatures (Celsius)
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“Feels-Like” Temperatures
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Port Arthur Perceived Temperature (F)
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Port Arthur Perceived Temperature (C)
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Average Port Arthur Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
Show Fahrenheit
| Month | Avg. High (°F) | Avg. Mean (°F) | Avg. Low (°F) |
|---|---|---|---|
| Jan | 64.3 | 51.8 | 40.8 |
| Feb | 67.8 | 55.3 | 44.7 |
| Mar | 74.3 | 62.1 | 51 |
| Apr | 80.3 | 68.9 | 58.1 |
| May | 86.5 | 75.8 | 66.1 |
| Jun | 92.4 | 81.8 | 72.9 |
| Jul | 93.1 | 82.4 | 73.9 |
| Aug | 94.6 | 83.1 | 74.6 |
| Sep | 90 | 78.8 | 70.1 |
| Oct | 83.5 | 70.4 | 59 |
| Nov | 74.5 | 61.2 | 49.9 |
| Dec | 68 | 55.7 | 45.1 |
Show Celsius
| Month | Avg. High (°C) | Avg. Mean (°C) | Avg. Low (°C) |
|---|---|---|---|
| Jan | 17.9 | 11 | 4.9 |
| Feb | 19.9 | 12.9 | 7.1 |
| Mar | 23.5 | 16.7 | 10.6 |
| Apr | 26.8 | 20.5 | 14.5 |
| May | 30.3 | 24.3 | 18.9 |
| Jun | 33.6 | 27.7 | 22.7 |
| Jul | 33.9 | 28 | 23.3 |
| Aug | 34.8 | 28.4 | 23.7 |
| Sep | 32.2 | 26 | 21.2 |
| Oct | 28.6 | 21.3 | 15 |
| Nov | 23.6 | 16.2 | 9.9 |
| Dec | 20 | 13.2 | 7.3 |
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Port Arthur are May, March, and then April. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early April. For example, on the week of April 2nd there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid July with an average of 3 days of significant precipitation the week of July 16th.
When can you find snow in Port Arthur? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Port Arthur.
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Snow on the Ground
The graph below shows the average snow on the ground in Port Arthur (in).
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Average Rain and Snow by Month
Show Inches
| Month | Daily Chance of Rain | Average Snow Depth (in) | Total Precipitation (in) |
|---|---|---|---|
| Jan | 18% | 0 | 4.6 |
| Feb | 19% | 0 | 3.3 |
| Mar | 16% | 0 | 4.1 |
| Apr | 16% | 0 | 4.8 |
| May | 16% | 0 | 4 |
| Jun | 22% | 0 | 3.6 |
| Jul | 29% | 0 | 8 |
| Aug | 22% | 0 | 4.9 |
| Sep | 28% | 0 | 6.8 |
| Oct | 18% | 0 | 5 |
| Nov | 18% | 0 | 4.4 |
| Dec | 20% | 0 | 4.1 |
Show Centimeters
| Month | Daily Chance of Rain | Average Snow Depth (cm) | Total Precipitation (cm) |
|---|---|---|---|
| Jan | 18 | 0 | 11.7 |
| Feb | 19 | 0 | 8.4 |
| Mar | 16 | 0 | 10.4 |
| Apr | 16 | 0 | 12.2 |
| May | 16 | 0 | 10.2 |
| Jun | 22 | 0 | 9.1 |
| Jul | 29 | 0 | 20.3 |
| Aug | 22 | 0 | 12.4 |
| Sep | 28 | 0 | 17.3 |
| Oct | 18 | 0 | 12.7 |
| Nov | 18 | 0 | 11.2 |
| Dec | 20 | 0 | 10.4 |
Humidity and Wind
Port Arthur has some very humid months, and above average humidity throughout the year. The least humid month is January (64.8% relative humidity), and the most humid month is July (70.6%).
Wind in Port Arthur is usually moderate. The windiest month is April, followed by February and March. April’s average wind speed of around 8.9 knots (10.3 MPH or 16.5 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 16.5 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Port Arthur.
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Wind
The graph below shows wind speed (max and average) in knots.
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Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
| Month | Avg. Wind | Avg. Wind Feel | Sustained High Wind | High Wind Feel |
| Jan | 8 | Gentle breeze | 14.4 | Significant breeze |
| Feb | 8.5 | Gentle breeze | 15.2 | Significant breeze |
| Mar | 8.4 | Gentle breeze | 15.3 | Significant breeze |
| Apr | 8.9 | Gentle breeze | 16 | Significant breeze |
| May | 8.2 | Gentle breeze | 15 | Significant breeze |
| Jun | 6.3 | Light breeze | 13.7 | Significant breeze |
| Jul | 5 | Light breeze | 12.7 | Significant breeze |
| Aug | 5 | Light breeze | 12.2 | Significant breeze |
| Sep | 5.8 | Light breeze | 12.4 | Significant breeze |
| Oct | 6.5 | Light breeze | 12.9 | Significant breeze |
| Nov | 7.2 | Gentle breeze | 13.4 | Significant breeze |
| Dec | 8 | Gentle breeze | 14.4 | Significant breeze |
Show Relative Humidity by Month
| Month | Avg. Relative Humidity |
|---|---|
| Jan | 64.8% |
| Feb | 67% |
| Mar | 66.3% |
| Apr | 66% |
| May | 66.3% |
| Jun | 68% |
| Jul | 70.6% |
| Aug | 69.2% |
| Sep | 69.9% |
| Oct | 65.4% |
| Nov | 66.5% |
| Dec | 69.1% |
Is it Safe to Travel to Port Arthur?
Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.
The Busiest and Least Crowded Months
The busiest month for tourism in Port Arthur, TX, US is June, followed by July and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Port Arthur in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
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Overall Port Arthur Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 90.1°F (32.3°C) and 70.7°F (21.5°C) with warmer temperatures in the later months. Rain is somewhat common with roughly 5 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the most precipitation with 7 to 9 days of precipitation per month. June – August is the busiest season for tourism in Port Arthur, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 91°F (32.8°C) and 70.1°F (21.2°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 5 to 8 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is too cold this time of year in Port Arthur to be enjoyable for warm weather travelers. The average high during this season is between 71.5°F (21.9°C) and 63.1°F (17.3°C). On average, it rains or snows a fair amount: 5 to 6 times per month. These times of year are the slowest with tourists.
Best Times to Travel› the United States › Port Arthur, TX, US