The best times to visit Gretna for ideal weather are

May 28th to September 23rd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Gretna Travel Info

Weather in Gretna

Temperature

Average temperatures in Gretna vary somewhat. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 21st 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 Gretna, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 68.5°F (20.3°C) with temperatures rarely dropping below 53.6°F (12°C) at night.

Gretna Temperatures (Fahrenheit)

Key
High
Average
Low

Gretna Temperatures (Celsius)

Key
High
Average
Low

“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.

Gretna Perceived Temperature (F)

Key
High
Average
Low

Gretna Perceived Temperature (C)

Key
High
Average
Low

 

Average Gretna 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 44.4 40.1 35.4
Feb 45.7 40.4 35.4
Mar 49.4 42.8 36.7
Apr 55.4 47.5 40.4
May 59.5 51.8 44.7
Jun 64.7 56.9 49.6
Jul 67.5 59.9 53.3
Aug 65.9 59 52.7
Sep 62.7 55.6 48.9
Oct 57.1 50.9 44.8
Nov 50.1 45.1 39.7
Dec 44.9 39.9 34.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 6.9 4.5 1.9
Feb 7.6 4.7 1.9
Mar 9.7 6 2.6
Apr 13 8.6 4.7
May 15.3 11 7.1
Jun 18.2 13.8 9.8
Jul 19.7 15.5 11.8
Aug 18.8 15 11.5
Sep 17.1 13.1 9.4
Oct 13.9 10.5 7.1
Nov 10.1 7.3 4.3
Dec 7.2 4.4 1.3

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Gretna are April, March, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid April. For example, on the week of April 16th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid August with an average of 3 days of significant precipitation the week of August 13th.

When can you find snow in Gretna? 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 Gretna.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Gretna (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 37% 0 3.6
Feb 26% 0 2.1
Mar 23% 0 2.1
Apr 20% 0 1.6
May 27% 0 2.7
Jun 23% 0 3
Jul 32% 0 4.1
Aug 34% 0 3.8
Sep 25% 0 2.6
Oct 34% 0 3.7
Nov 33% 0 3.8
Dec 38% 0 4.8

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 37 0 9.1
Feb 26 0 5.3
Mar 23 0 5.3
Apr 20 0 4.1
May 27 0 6.9
Jun 23 0 7.6
Jul 32 0 10.4
Aug 34 0 9.7
Sep 25 0 6.6
Oct 34 0 9.4
Nov 33 0 9.7
Dec 38 0 12.2

 

Humidity and Wind

Gretna has some extremely humid months, and above average humidity throughout the year. The least humid month is May (67.5% relative humidity), and the most humid month is December (83.5%).

Wind in Gretna is usually extremely calm. The windiest month is January, followed by February and March. January’s average wind speed of around 4.8 knots (5.5 MPH or 8.9 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid January where average top sustained speeds reach 23.7 knots, which is considered a strong breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Gretna.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

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 4.8 Light breeze 20.2 Strong breeze
Feb 3 Barely noticeable 13.9 Significant breeze
Mar 2.5 Barely noticeable 17.1 Strong breeze
Apr 1.7 Barely noticeable 12.9 Significant breeze
May 1.7 Barely noticeable 14.5 Strong breeze
Jun 1.2 Barely noticeable 10.5 Gentle breeze
Jul 1.3 Barely noticeable 12.4 Strong breeze
Aug 1.2 Barely noticeable 11.6 Significant breeze
Sep 1.4 Barely noticeable 13.2 Strong breeze
Oct 1 Barely noticeable 10.5 Gentle breeze
Nov 1.4 Barely noticeable 13.3 Strong breeze
Dec 1.6 Barely noticeable 15.4 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 82.4%
Feb 80.9%
Mar 75.7%
Apr 69.5%
May 67.5%
Jun 70.2%
Jul 73.3%
Aug 74.9%
Sep 76.6%
Oct 78.8%
Nov 82%
Dec 83.5%

 

Is it Safe to Travel to Gretna?

Our best data indicates this area is somewhat safe. As of Dec 04, 2023 there are travel warnings for the United Kingdom; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 27, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Gretna, the United Kingdom is July, followed by March 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 Gretna in June. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 66.3 in June means 66.3% of the tourists vs. July.

 

 

Overall Gretna Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 63.4°F (17.4°C) and 47.9°F (8.8°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 8 days of significant precipitation per month. Spring is the 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 comfortably cool weather with high temperatures that are comfortable. These months see moderate precipitation with 7 to 10 days of precipitation per month. June – August is the second busiest season for tourism in Gretna, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 64.5°F (18.1°C) and 45.8°F (7.7°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 7 to 11 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Gretna to be enjoyable for warm weather travelers. The average high during this season is between 47.9°F (8.8°C) and 43.1°F (6.2°C). On average, it rains or snows a great amount: 7 to 12 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travel› the United Kingdom › Gretna, the United Kingdom