See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:05
Sunrise
19:14
Sunset
Moon
Waxing Crescent
12:24
Moonrise
21:53
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
Upgrade to access real-time air quality data for Port Arthur.
Resources
UV Index
Humidity
Weather in Port Arthur tomorrow, September 17, 2026
Port Arthur is set for a fine, sunny day on September 17, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside. The first half of the day looks overcast, as cloud amounts reach about 100% around 01:00. Brighter weather, if it comes, waits until later.
Expect highs of 34°C and cooler readings close to 26°C. Moisture in the air spans 35%-90%, with the highest values around 07:00. Expect gentle winds, highest near 17:00 at 6.5 km/h.
Later hours favour clearer intervals, as cloud stays near 13% around 17:00. The afternoon is the better half for outdoor time. Expect visibility near 15.9 km, with poorer spells close to 14.7 km. Expect sunrise at 07:06, sunset at 19:12, and 12 hours 6 minutes of sunlight today overall.
In short, September 17, 2026 looks like a fine day in Port Arthur for being outside, peaking around 34°C.
Frequently asked questions about weather in Port Arthur
How warm does it get in Port Arthur?
The warmest month in Port Arthur is August, with average high temperatures of 32°C. The average temperature during this period is around 29°C.
How cold does it get in Port Arthur?
The coldest month in Port Arthur is January, with average low temperatures of 8°C. The average temperature during this period is around 12°C.
What is the wettest time of year in Port Arthur?
The wettest month in Port Arthur is August, with an average of 181mm of precipitation.
What is the driest time of year in Port Arthur?
The driest month in Port Arthur is February, with an average of 76mm of precipitation.
