Average Weather in February in Derry Ireland
Daily high temperatures are around 48°F, rarely falling below 42°F or exceeding 53°F. The lowest daily average high temperature is 48°F on February 10.
Daily low temperatures are around 41°F, rarely falling below 34°F or exceeding 47°F. The lowest daily average low temperature is 40°F on February 18.
For reference, on July 27, the hottest day of the year, temperatures in Derry typically range from 56°F to 65°F, while on February 18, the coldest day of the year, they range from 40°F to 48°F.
Average High and Low Temperature in February
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on February. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in February
The month of February in Derry experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 67% to 62%.
The clearest day of the month is February 27, with clear, mostly clear, or partly cloudy conditions 38% of the time.
For reference, on December 25, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 69%, while on July 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 50%.
Cloud Cover Categories in February
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Derry, the chance of a wet day over the course of February is decreasing, starting the month at 43% and ending it at 37%.
For reference, the year's highest daily chance of a wet day is 49% on January 7, and its lowest chance is 27% on April 22.
Probability of Precipitation in February
The average sliding 31-day rainfall during February in Derry is decreasing, starting the month at 3.7 inches, when it rarely exceeds 6.4 inches or falls below 1.6 inches, and ending the month at 3.1 inches, when it rarely exceeds 5.3 inches or falls below 1.0 inches.
Average Monthly Rainfall in February
Over the course of February in Derry, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 40 minutes, implying an average daily increase of 3 minutes, 42 seconds, and weekly increase of 25 minutes, 56 seconds.
The shortest day of the month is February 1, with 9 hours, 10 minutes of daylight and the longest day is February 28, with 10 hours, 50 minutes of daylight.
Hours of Daylight and Twilight in February
The latest sunrise of the month in Derry is 8:15 AM on February 1 and the earliest sunrise is 51 minutes earlier at 7:24 AM on February 28.
The earliest sunset is 5:24 PM on February 1 and the latest sunset is 49 minutes later at 6:14 PM on February 28.
Daylight saving time is observed in Derry during 2019, but it neither starts nor ends during February, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:18 AM and sets 16 hours, 39 minutes later, at 9:57 PM, while on December 22, the shortest day of the year, it rises at 8:40 AM and sets 7 hours, 49 minutes later, at 4:29 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in February
The chance that a given day will be muggy in Derry is essentially constant during February, remaining around 0% throughout.
For reference, on August 8, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in February
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Derry is gradually decreasing during February, decreasing from 17.1 miles per hour to 16.4 miles per hour over the course of the month.
For reference, on January 1, the windiest day of the year, the daily average wind speed is 18.1 miles per hour, while on July 26, the calmest day of the year, the daily average wind speed is 12.2 miles per hour.
Average Wind Speed in February
Wind Direction in February
Derry is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Derry is essentially constant during February, remaining around 49°F throughout.
Average Water Temperature in February
The growing season in Derry typically lasts for 11 months (336 days), from around February 1 to around January 3, rarely starting after March 19, or ending before November 30.
The month of February in Derry is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season rapidly increasing from 50% to 76% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in February
The average accumulated growing degree days in Derry are essentially constant during February, remaining within 3°F of 10°F throughout.
Growing Degree Days in February
The average daily incident shortwave solar energy in Derry is gradually increasing during February, rising by 0.9 kWh, from 1.1 kWh to 2.0 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in February
For the purposes of this report, the geographical coordinates of Derry are 51.587 deg latitude, -9.050 deg longitude, and 243 ft elevation.
The topography within 2 miles of Derry contains significant variations in elevation, with a maximum elevation change of 669 feet and an average elevation above sea level of 243 feet. Within 10 miles contains significant variations in elevation (1,102 feet). Within 50 miles contains very significant variations in elevation (3,389 feet).
The area within 2 miles of Derry is covered by grassland (73%) and cropland (16%), within 10 miles by grassland (49%) and water (31%), and within 50 miles by water (56%) and grassland (22%).
This report illustrates the typical weather in Derry year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Cork Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Derry.
At a distance of 48 kilometers from Derry, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Derry according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
Time zones for aiports and weather stations are provided by AskGeo.com .