Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
Portadown's September showcases an average high-temperature of a still refreshing 14.9°C (58.8°F), hardly distinct from August's 16.6°C (61.9°F). In September, Portadown reports a consistent average low-temperature of 9.4°C (48.9°F) during the nights.Humidity
The average relative humidity in September in Portadown is 89%.Rainfall
In Portadown, during September, the rain falls for 9.7 days and regularly aggregates up to 15mm (0.59") of precipitation. Throughout the year, there are 148.5 rainfall days, and 243mm (9.57") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 42min.On the first day of September, sunrise is at 6:34 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:04 pm BST.
Sunshine
In Portadown, United Kingdom, the average sunshine in September is 5.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Portadown?
What is the average humidity in September in Portadown?
How much does it rain in Portadown in September?
When it does not snow in Portadown?
What is the average length of the day in September in Portadown?
When are sunrise and sunset in September in Portadown?
How many hours of sunshine does Portadown have in September?
What is the UV index intensity in September in Portadown?
Average temperature in September
Portadown, United Kingdom
- Average high temperature in September: 14.9°C
The warmest month (with the highest average high temperature) is July (17.2°C).
The month with the lowest average high temperature is January (6.5°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is August (10.8°C).
The coldest months (with the lowest average low temperature) are January and February (2.3°C).
Average pressure in September
Portadown, United Kingdom
- Average pressure in September: 1014.4mbar
The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.4mbar).
Average wind speed in September
Portadown, United Kingdom
- Average wind speed in September: 15.1km/h
The windiest month (with the highest average wind speed) is January (19.7km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in September
Portadown, United Kingdom
- Average humidity in September: 89%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is April (84%).
Average rainfall in September
Portadown, United Kingdom
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is June (30mm).
The driest month (with the least rainfall) is January (13mm).
Average rainfall days in September
Portadown, United Kingdom
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Portadown, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Portadown, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Portadown, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 5h and 4min
The month with the most sunshine is June (Average sunshine: 7h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Portadown, United Kingdom
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is December (16 days).
The month with the least sunshine days is August (11.2 days).
Average UV index in September
Portadown, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are June and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Portadown, United Kingdom
- Average cloud cover in September: 60
The months with the most cloud cover are July and August (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 56).
Average visibility in September
Portadown, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).
