Cardiff Bay (Wales Coast Path) walk

Cardiff hourly weather (Open Meteo)

Sunset: 18:18. Dusk: 18:52. Dark: 19:30. Moon 97% (dusk to 06:00)

Updated: Tue, 15-Oct at 23:37

	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Wed, 16 Oct	83%	80%	83%	88%	92%	🌫 93%	92%	92%	92%	93%	94%	96%	99%	100%	100%	100%
Thu, 17 Oct	2%	0%	0%	0%	0%	10%	24%	35%	40%	41%	39%	32%	22%	14%	8%	4%
Fri, 18 Oct	0%	0%	0%	0%	2%	8%	17%	27%	38%	50%	59%	61%	60%	61%	68%	79%
Sat, 19 Oct	50%	43%	38%	34%	31%	30%	29%	27%	22%	15%	10%	6%	4%	2%	0%	0%
Sun, 20 Oct	46%	53%	61%	70%	76%	80%	81%	80%	74%	65%	57%	52%	48%	45%	41%	38%
Mon, 21 Oct	40%	41%	42%	44%	45%	46%	47%	47%	45%	43%	40%	37%	34%	31%	28%	25%
Tue, 22 Oct	25%	27%	30%	33%	35%	37%	39%	39%	38%	35%	32%	29%	25%	22%	19%	16%
Wed, 23 Oct	8%	10%	13%	18%	22%	26%	30%	33%	34%	34%	33%	32%	31%	31%	31%	32%
Thu, 24 Oct	45%	47%	50%	54%	57%	60%	62%	63%	62%	59%	56%	53%	49%	45%	42%	38%
Fri, 25 Oct	30%	31%	32%	33%	34%	35%	35%	35%	34%	33%	32%	31%	29%	27%	25%	22%
Sat, 26 Oct	17%	18%	19%	19%	20%	21%	21%	22%	22%	23%	23%	23%	24%	24%	24%	24%
Sun, 27 Oct	25%	25%	26%	26%	26%	27%	27%	27%	27%	27%	27%	27%	27%	27%	26%	26%
Mon, 28 Oct	24%	26%	28%	31%	34%	36%	37%	36%	34%	31%	29%	26%	24%	23%	23%	23%
Tue, 29 Oct	29%	28%	26%	24%	22%	21%	20%	21%	23%	25%	27%	29%	31%	31%	31%	30%
Wed, 30 Oct	18%	17%	17%	17%	17%	18%	18%	18%	18%	25%	27%	28%	29%	28%	27%	🌫 25%

Percentages are the chance of rain.

Weather data by Open-Meteo

Cardiff hourly weather (Met Office)

Sunset: 18:18. Dusk: 18:52. Dark: 19:30. Moon 97% (dusk to 06:00)

Updated: Tue, 15-Oct at 20:00

	06	09	12	15	18	21
Today						98%
Wed, 16 Oct	82%	74%	84%	94%	93%	88%
Thu, 17 Oct	3%	0%	31%	9%	9%	1%
Fri, 18 Oct	2%	3%	10%	58%	55%	64%
Sat, 19 Oct	47%	43%	29%	3%	2%	4%
Sun, 20 Oct	82%	85%	80%	44%	19%	16%
Mon, 21 Oct	8%	8%	9%	8%	5%	4%
Tue, 22 Oct	8%	7%	30%	7%	4%

Percentages are the chance of rain.

Weather data by Met Office

Regional weather (Met Office)

Sunset: 18:18. Dusk: 18:52. Dark: 19:30. Moon 97% (dusk to 06:00)

Updated: Tue, 15-Oct at 23:38

Wales

Widespread cloud brings persistent rain through the night.

• Cloud shrouds the country, with occasionally heavy rain persisting throughout tonight
• Rather murky inland with widespread low cloud allowing mist and patchy fog to form readily over high ground, and breezy along the coasts
• Milder than recent nights
• Minimum Temperature 14C

Wednesday:

• Heavy and perhaps thundery rain continues to plague Wales, moving stubbornly north-eastwards as winds turn light through the morning, resulting in localised flooding
• Eventually turning brighter by the evening
• Maximum Temperature 18C

Outlook for Thursday to Saturday:

• Some patchy rain through Thursday, though turning more settled, before getting cloudier, wetter and windier on Friday
• Further heavy rain overnight, but drier and more settled once more on Saturday

UK Day 6-7 and week 2

• There is potential for a deep area of low pressure to pass over or close to the west/northwest of the UK early in this period, potentially bringing a spell of very strong winds and heavy rain, especially to parts of the north and west
• Through next week, an oscillation between occasional spells of rain, most frequent in the northwest, with longer drier interludes in-between, is likely
• It may be rather windy at times too, again especially in northern and western areas
• Towards late October there are signs that, whilst northwestern areas may continue to see some rain at times, high pressure may become increasingly influential, potentially bringing more widely settled and drier conditions, with an increasing chance of overnight frost and fog

UK Week 3 and 4

• High pressure may become more influential into early November, potentially providing longer spells of dry weather, but with the chance of overnight frost and fog becoming rather more widespread than in the days preceding this period
• Some large fluctuations between daytime and night-time temperatures are possible, with relatively mild days where fog doesn't linger, and cold frosty nights
• Towards mid-November, high pressure may become more focussed towards the northwest of the UK, allowing a gradual trend towards colder and perhaps more unsettled conditions, especially in more southern and eastern areas

Weather data by Met Office

Cardiff Air Quality (Pollen and UV)

Updated: Tue, 15-Oct at 23:37

Key : Low Medium High Very High

Pollens

These pollens are shown (in season):

• Grass
• Alder and birch (trees)
• Mugwort and Ragweed (weeds)

When out walking, wraparound glasses, a disposable or washable facemask, and being at the front of the group, all help.

Other forecasts: Met Office, University of Worcester

UV and Air Quality

The UV forecast takes account of cloud cover.

"Air Q", the European Air Quality index, is a mix of dust/particulates, ozone, sulphur and nitrous oxides

Data

Weather data by Open-Meteo and CAMS ENSEMBLE

Cardiff Visibility

Updated: Tue, 15-Oct at 23:37

Visibility in km. Above 50km is 'good'. Humidity and air pollution make it worse. Theoretical maximum is 300km/200 miles in clean dry polar air.

On the South Downs, at ~ 170m/500ft, the horizon is is ~ 45km/30 miles away. On a mountain at 1,000m/3,000ft, it is ~ 160km/100 miles away. Formula: horizon in km = √ (13 x altitude in m)

Weather data by Open-Meteo

Cardiff daylight

Max Height (solar noon) is when the sun is highest in the sky.

Day length is dusk to dawn. Times will vary if there is a hill on the horizon.

After 'Light' (nautical dawn) and before 'Dark' (nautical dusk), the horizon should be visible.

After 'Dawn' (civil dawn) and before 'Dusk' (civil dusk, or lighting up time), there should be enough light to read,

There will be enough light for walking for at least 30 minutes before sunrise and after sunset, even on an overcast day.

Cardiff moonlight

Moonlight chart for walking at night.

Notes

• The percentage of the moon which is illuminated doesn't vary much with location.
• A full moon is not just bigger, it is much brighter. A quarter moon (1/2 disk visible) give less than 5% of the illumination of a full moon. You can walk with a quarter moon if its high in the sky (after dusk for a growing moon, before dawn for a shrinking moon).
• Sky glow (light reflected by air or clouds) from nearby cities, and especially snow on the ground also effect light levels.
• Times will vary a few minutes, as (i) these figures are for the centre of the county the walk is in, (ii) if there are hills on the horizon, and (iii) if you are on a hill
• Of course, you need a cloudless night as well!

Cardiff weather (Accuweather)