The best times to visit Rosnakill for ideal weather are
June 18th to September 30th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Rosnakill Travel Guide
Other Rosnakill Travel Info
Weather in Rosnakill
Temperature
Average temperatures in Rosnakill 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 17th 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 Rosnakill, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 63.2°F (17.3°C) with temperatures rarely dropping below 54.4°F (12.4°C) at night.
Rosnakill Temperatures (Fahrenheit)
Key
Rosnakill Temperatures (Celsius)
Key
“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.
Rosnakill Perceived Temperature (F)
Key
Rosnakill Perceived Temperature (C)
Key
Average Rosnakill 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 | 46.3 | 42.6 | 38.4 |
| Feb | 46.9 | 43 | 38.9 |
| Mar | 48.9 | 44.3 | 39.6 |
| Apr | 53 | 47.8 | 42.7 |
| May | 55.8 | 50.9 | 46.3 |
| Jun | 59.5 | 54.7 | 50.1 |
| Jul | 62.4 | 57.7 | 53.3 |
| Aug | 62.2 | 57.7 | 53.5 |
| Sep | 60.3 | 56 | 51.9 |
| Oct | 56.3 | 52.3 | 47.9 |
| Nov | 50.9 | 47.4 | 43 |
| Dec | 47.3 | 43.7 | 39.2 |
Show Celsius
| Month | Avg. High (°C) | Avg. Mean (°C) | Avg. Low (°C) |
|---|---|---|---|
| Jan | 7.9 | 5.9 | 3.6 |
| Feb | 8.3 | 6.1 | 3.8 |
| Mar | 9.4 | 6.8 | 4.2 |
| Apr | 11.7 | 8.8 | 5.9 |
| May | 13.2 | 10.5 | 7.9 |
| Jun | 15.3 | 12.6 | 10.1 |
| Jul | 16.9 | 14.3 | 11.8 |
| Aug | 16.8 | 14.3 | 11.9 |
| Sep | 15.7 | 13.3 | 11.1 |
| Oct | 13.5 | 11.3 | 8.8 |
| Nov | 10.5 | 8.6 | 6.1 |
| Dec | 8.5 | 6.5 | 4 |
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rosnakill are April, June, and then May. 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 early December with an average of 4 days of significant precipitation the week of December 3rd.
When can you find snow in Rosnakill? Weather stations report a bit of annual snow likely to be deepest around January, especially close to early January. The best time to ski (if at all) in Rosnakill is often around around January 1st when fresh powder is deepest. 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 Rosnakill.
Key
Snow on the Ground
The graph below shows the average snow on the ground in Rosnakill (in).
Key
Average Rain and Snow by Month
Show Inches
| Month | Daily Chance of Rain | Average Snow Depth (in) | Total Precipitation (in) |
|---|---|---|---|
| Jan | 51% | 0.8 | 5.1 |
| Feb | 40% | 0.4 | 3.5 |
| Mar | 34% | 0 | 3.1 |
| Apr | 22% | 0 | 2.2 |
| May | 33% | 0 | 3.3 |
| Jun | 29% | 0 | 2.9 |
| Jul | 38% | 0 | 3.6 |
| Aug | 38% | 0 | 4 |
| Sep | 34% | 0 | 3.4 |
| Oct | 42% | 0 | 4.3 |
| Nov | 49% | 0 | 5 |
| Dec | 51% | 0 | 5.3 |
Show Centimeters
| Month | Daily Chance of Rain | Average Snow Depth (cm) | Total Precipitation (cm) |
|---|---|---|---|
| Jan | 51 | 2 | 13 |
| Feb | 40 | 1 | 8.9 |
| Mar | 34 | 0 | 7.9 |
| Apr | 22 | 0 | 5.6 |
| May | 33 | 0 | 8.4 |
| Jun | 29 | 0 | 7.4 |
| Jul | 38 | 0 | 9.1 |
| Aug | 38 | 0 | 10.2 |
| Sep | 34 | 0 | 8.6 |
| Oct | 42 | 0 | 10.9 |
| Nov | 49 | 0 | 12.7 |
| Dec | 51 | 0 | 13.5 |
Humidity and Wind
Rosnakill has some very humid months, and high humidity throughout the year. The least humid month is April (73% relative humidity), and the most humid month is July (79.6%).
Wind in Rosnakill is usually stronger than many places. The windiest month is January, followed by December and November. January’s average wind speed of around 18 knots (20.7 MPH or 33.3 KPH) is considered “a fresh breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late January and early February where average top sustained speeds reach 28.5 knots, which is considered high wind or moderate gale winds.
Relative Humidity (%)
The graph below shows the average % humidity by month in Rosnakill.
Key
Wind
The graph below shows wind speed (max and average) in knots.
Key
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 | 18 | Strong breeze | 26.8 | Very strong breeze |
| Feb | 15.9 | Significant breeze | 24 | Very strong breeze |
| Mar | 16.4 | Significant breeze | 24.1 | Very strong breeze |
| Apr | 13.5 | Significant breeze | 20.3 | Strong breeze |
| May | 14.3 | Significant breeze | 21.2 | Very strong breeze |
| Jun | 11.7 | Significant breeze | 17.9 | Strong breeze |
| Jul | 11.8 | Significant breeze | 18.1 | Very strong breeze |
| Aug | 12.9 | Significant breeze | 19.3 | Strong breeze |
| Sep | 14.3 | Significant breeze | 20.9 | Very strong breeze |
| Oct | 15.2 | Significant breeze | 22.4 | Very strong breeze |
| Nov | 16.7 | Significant breeze | 25 | Very strong breeze |
| Dec | 17.6 | Strong breeze | 26.6 | Very strong breeze |
Show Relative Humidity by Month
| Month | Avg. Relative Humidity |
|---|---|
| Jan | 77.3% |
| Feb | 77.4% |
| Mar | 74.1% |
| Apr | 73% |
| May | 73.7% |
| Jun | 77.9% |
| Jul | 79.6% |
| Aug | 78.4% |
| Sep | 77% |
| Oct | 75.9% |
| Nov | 76.5% |
| Dec | 75.7% |
Is it Safe to Travel to Rosnakill?
Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Ireland; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 28, 2023.
The Busiest and Least Crowded Months
The busiest month for tourism in Rosnakill, Ireland is July, followed by January and August. 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 Rosnakill in April. 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
Overall Rosnakill Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 59°F (15°C) and 47.9°F (8.8°C) with warmer temperatures in the later months. Rain is somewhat common with 7 to 10 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.
Summer (June through August)
The middle-year months have comfortably cool weather with high temperatures that are brisk. These months see moderate precipitation with 9 to 12 days of precipitation per month. June – August is the busiest season for tourism in Rosnakill, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 61.2°F (16.2°C) and 48.1°F (8.9°C), which will feel chilly given the humidity and wind. It rains or snows a good amount: 10 to 15 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is too cold this time of year in Rosnakill to be enjoyable for warm weather travelers. The average high during this season is between 48°F (8.9°C) and 45.3°F (7.4°C). On average, it rains or snows a very great amount: 11 to 16 times per month. These times of year are the second busiest with tourists.
Best Times to Travel› Ireland › Rosnakill, Ireland