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Best time to visit Cardiff, Wales

Our verdict

The best time to visit Cardiff is June-September

Based on all the essential things any traveller needs to know about visiting Cardiff such as the cost of travel, weather, peak travel seasons and many more, June-September is the best time of year to go.

In summer, the average maximum temperature is around 19℃ (66℉), but temperatures can sometimes reach as high as 22℃ (72℉) on the hottest days of the year. The coldest it usually gets in winter-time in Cardiff is around 1℃ (33℉).

If you’re a sun-chaser and want to visit Cardiff when the days are longest, you should visit in July. November sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in April instead.

Keep reading to find out more detailed information about the seasons and climate in Cardiff, as well as our favourite tools to help you find the best options for transport, accommodation, and much more.

Warmest month

July

Least rainfall

April

Most daylight

July

Cardiff seasons

Before you continue, it’s important to know when the seasons are in Cardiff as they might be different to yours depending on where in the world you’re travelling from. Cardiff is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Cardiff

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Cardiff for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Cardiff climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Cardiff for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Cardiff in January

  • Average temperature: 6℃ (42℉)
  • Average high temperature: 8℃ (46℉)
  • Average low temperature: 4℃ (39℉)
  • Average humidity: 85%
  • Average sunny days: 15 days
  • Average rainfall: 16mm (1") over 11 days
  • Average snow days: 1 days
15 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Cardiff in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Cardiff in February

  • Average temperature: 6℃ (43℉)
  • Average high temperature: 8℃ (46℉)
  • Average low temperature: 4℃ (39℉)
  • Average humidity: 83%
  • Average sunny days: 15 days
  • Average rainfall: 22mm (1") over 9 days
  • Average snow days: 1 days
15 days
of pure sunshine
9 days
of showers or rain

What to pack: If you’re heading to Cardiff in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Cardiff in March

  • Average temperature: 7℃ (45℉)
  • Average high temperature: 10℃ (50℉)
  • Average low temperature: 4℃ (40℉)
  • Average humidity: 82%
  • Average sunny days: 19 days
  • Average rainfall: 17mm (1") over 10 days
19 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Cardiff in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Cardiff in April

  • Average temperature: 9℃ (49℉)
  • Average high temperature: 12℃ (54℉)
  • Average low temperature: 6℃ (43℉)
  • Average humidity: 81%
  • Average sunny days: 19 days
  • Average rainfall: 12mm (0") over 9 days
19 days
of pure sunshine
9 days
of showers or rain

What to pack: If you’re heading to Cardiff in April, make sure you pack a warm jacket or coat.


Cardiff in May

  • Average temperature: 12℃ (53℉)
  • Average high temperature: 15℃ (58℉)
  • Average low temperature: 8℃ (47℉)
  • Average humidity: 81%
  • Average sunny days: 18 days
  • Average rainfall: 15mm (1") over 10 days
18 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Cardiff in May, make sure you pack a warm jacket or coat.


Cardiff in June

  • Average temperature: 14℃ (58℉)
  • Average high temperature: 17℃ (63℉)
  • Average low temperature: 11℃ (52℉)
  • Average humidity: 84%
  • Average sunny days: 17 days
  • Average rainfall: 16mm (1") over 9 days
17 days
of pure sunshine
9 days
of showers or rain

What to pack: If you’re heading to Cardiff in June, make sure you pack a warm jacket or coat.


Cardiff in July

  • Average temperature: 16℃ (61℉)
  • Average high temperature: 19℃ (66℉)
  • Average low temperature: 13℃ (56℉)
  • Average humidity: 83%
  • Average sunny days: 16 days
  • Average rainfall: 13mm (1") over 11 days
16 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Cardiff in July, make sure you pack a light jumper or hoodie.


Cardiff in August

  • Average temperature: 16℃ (61℉)
  • Average high temperature: 19℃ (65℉)
  • Average low temperature: 13℃ (56℉)
  • Average humidity: 83%
  • Average sunny days: 15 days
  • Average rainfall: 22mm (1") over 12 days
15 days
of pure sunshine
12 days
of showers or rain

What to pack: If you’re heading to Cardiff in August, make sure you pack a light jumper or hoodie.


Cardiff in September

  • Average temperature: 14℃ (58℉)
  • Average high temperature: 17℃ (63℉)
  • Average low temperature: 11℃ (53℉)
  • Average humidity: 83%
  • Average sunny days: 16 days
  • Average rainfall: 17mm (1") over 10 days
16 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Cardiff in September, make sure you pack a warm jacket or coat.

Cardiff in October

  • Average temperature: 12℃ (54℉)
  • Average high temperature: 14℃ (58℉)
  • Average low temperature: 10℃ (50℉)
  • Average humidity: 85%
  • Average sunny days: 16 days
  • Average rainfall: 26mm (1") over 11 days
16 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Cardiff in October, make sure you pack a warm jacket or coat.


Cardiff in November

  • Average temperature: 9℃ (48℉)
  • Average high temperature: 10℃ (51℉)
  • Average low temperature: 7℃ (45℉)
  • Average humidity: 85%
  • Average sunny days: 14 days
  • Average rainfall: 31mm (1") over 13 days
14 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Cardiff in November, make sure you pack a warm jacket or coat.


Cardiff in December

  • Average temperature: 7℃ (45℉)
  • Average high temperature: 9℃ (47℉)
  • Average low temperature: 5℃ (41℉)
  • Average humidity: 86%
  • Average sunny days: 15 days
  • Average rainfall: 27mm (1") over 12 days
  • Average snow days: 1 days
15 days
of pure sunshine
12 days
of showers or rain

What to pack: If you’re heading to Cardiff in December, make sure you pack a warm jacket or coat.


Top FAQs

The hottest month of the year in Cardiff is usually July, where temperatures tend to rise to around 19℃ (66℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Cardiff is generally around April. The dry season often coincides with cooler weather, so you should check the temperatures in April first to make sure it’s still a good time to go.
The rainiest time of year in Cardiff is generally around November, although the wetter season can sometimes extend a few months either side of November too.
If you want to get the most out of your time visiting Cardiff, or if you're just afraid of the dark, the days in July are usually the longest between sunrise and sunset.

Cardiff map

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