UTC Offset
UTC-05:00
Port Arthur, United States Snapshot 2026
Where is Port Arthur?
Port Arthur, United States
- Continent
- Americas
- Country
- United States
- City
- Port Arthur
- Population
- 55.3K
- Elevation
- 2 m
- Coordinates
- 29.89°, -93.94°
Port Arthur is a city in United States with a population of approximately 55.3K. Average temperatures range from 10°C (49°F) in January to 31°C (88°F) in August. The best time to visit is March, April, October, November.
Time in Port Arthur right now
Open full time & time zone page 22:55 55
Tuesday, June 16, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Port Arthur
Daylight in Port Arthur today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 04m
Climate normals for Port Arthur
Long-term monthly averages based on historical data.
January
Good 
February
Good March best
Excellent April best
Excellent May
Good June
Poor July
Wet August
Wet September
Fair October best
Excellent November best
Excellent December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 15°C / 10°C | 14°C / 7°C | 10days (129 mm) Wet | 6.9h Fair | 77% Humid | 3.8 Moderate | Good | View Details |
| February | 18°C / 12°C | 17°C / 10°C | 9days (74 mm) Wet | 7h Good | 82% Humid | 5 Moderate | Good | View Details |
| March best | 21°C / 16°C | 22°C / 15°C | 10days (93 mm) Wet | 8.7h Good | 79% Humid | 6.3 High | Excellent | View Details |
| April best | 24°C / 19°C | 25°C / 19°C | 11days (136 mm) Wet | 9.7h Good | 78% Humid | 7.5 Very High | Excellent | View Details |
| May | 27°C / 23°C | 31°C / 25°C | 14days (178 mm) Wet | 10.7h Excellent | 81% Humid | 8.1 Very High | Good | View Details |
| June | 30°C / 26°C | 35°C / 30°C | 17days (151 mm) Wet | 11.2h Excellent | 80% Humid | 8.3 Very High | Poor | View Details |
| July | 31°C / 27°C | 37°C / 32°C | 18days (132 mm) Wet | 11.3h Excellent | 81% Humid | 7.9 Very High | Wet | View Details |
| August | 31°C / 27°C | 37°C / 32°C | 19days (177 mm) Wet | 10.8h Excellent | 80% Humid | 8.1 Very High | Wet | View Details |
| September | 30°C / 25°C | 34°C / 29°C | 13days (135 mm) Wet | 9.9h Good | 78% Humid | 7.2 Very High | Fair | View Details |
| October best | 26°C / 20°C | 29°C / 22°C | 8days (89 mm) Wet | 9.2h Good | 75% Muggy | 6 High | Excellent | View Details |
| November best | 21°C / 15°C | 21°C / 15°C | 9days (85 mm) Wet | 8h Good | 78% Humid | 4.3 Moderate | Excellent | View Details |
| December | 17°C / 12°C | 17°C / 10°C | 10days (143 mm) Wet | 6.8h Fair | 80% Humid | 3.8 Moderate | Good | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 15°C / 10°C . Feb: 18°C / 12°C . Mar: 21°C / 16°C . Apr: 24°C / 19°C . May: 27°C / 23°C . Jun: 30°C / 26°C . Jul: 31°C / 27°C . Aug: 31°C / 27°C . Sep: 30°C / 25°C . Oct: 26°C / 20°C . Nov: 21°C / 15°C . Dec: 17°C / 12°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 129 mm. Feb: 74 mm. Mar: 93 mm. Apr: 136 mm. May: 178 mm. Jun: 151 mm. Jul: 132 mm. Aug: 177 mm. Sep: 135 mm. Oct: 89 mm. Nov: 85 mm. Dec: 143 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 82%. Mar: 79%. Apr: 78%. May: 81%. Jun: 80%. Jul: 81%. Aug: 80%. Sep: 78%. Oct: 75%. Nov: 78%. Dec: 80%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 20 km/h . Mar: 22 km/h . Apr: 22 km/h . May: 19 km/h . Jun: 17 km/h . Jul: 15 km/h . Aug: 15 km/h . Sep: 14 km/h . Oct: 17 km/h . Nov: 17 km/h . Dec: 19 km/h .
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 13°C . Feb: 15°C . Mar: 19°C . Apr: 23°C . May: 27°C . Jun: 30°C . Jul: 31°C . Aug: 32°C . Sep: 30°C . Oct: 26°C . Nov: 21°C . Dec: 16°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 8. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 6. Nov: UV 4. Dec: UV 4.
Frequently Asked Questions
Port Arthur has a population of approximately 55.3K.
The best months to visit Port Arthur are March, April, October, November, when temperatures are pleasant and rainfall is lower.
Port Arthur receives approximately 1522mm of rainfall annually across 148 rainy days.
Port Arthur is located in United States, in the Americas region.
Port Arthur sits at an elevation of 2 m (7 ft) above sea level.