Derry Historic Weather Records

Analyse hottest, coldest, windiest & wettest days

Derry Weather Trend Graph


Temperature (°C)
.
Months
Max Temp.
Historic Max Temp.
Min Temp.
Historic Min Temp.

Yearly Summary 2026


26°C
Highest Temp
25 Jun. 26

-7°C
Lowest Temp
17 Aug. 26


Seasonal Breakdown

Hottest MonthJuly18.3°C

Coldest MonthJanuary2.88°C

Wettest MonthJune4.45mm

Windiest MonthJanuary32.35km/h

Frequently Asked Questions


1. What is the hottest month in Derry historically?

August is historically Derry's hottest month, with average maximum temperatures around 17°C. During peak heatwave events, the highest recorded temperatures have reached 27°C on 2021-07-22.

2. What is the coldest month in Derry historically?

January is Derry's coldest month, with average minimum temperatures around 3°C. The all-time record low of -7°C was recorded on 2010-12-21.

3. What is the average annual rainfall in Derry over the past 17 years?

Derry's average annual rainfall is approximately 1208.7mm, based on records spanning 17 years.

4. How many rainy days does Derry experience on average per year?

Derry historically records approximately 278 rainy days per year. December has the highest number of rain days at an average of 25.2 days.

5. What is the all-time highest temperature ever recorded in Derry?

The all-time highest temperature recorded in Derry is 27°C on 2021-07-22.

6. What is the all-time lowest temperature ever recorded in Derry?

The all-time lowest temperature recorded in Derry is -7°C on 2010-12-21.

7. What is the windiest time of year in Derry historically?

Derry experiences its strongest winds during February. The historic gust record of 69.3 kph was recorded on 2025-01-24.

8. What is the highest and lowest humidity in Derry during a year?

Usually, Derry's humidity peaks in September at around 85.7% and drops to its lowest in April at approximately 81.02%.