Llanishen (Cardiff) weather

Headline:

Mostly dry and turning increasingly warm this week.

Today:

Monday will start rather cloudy with some showers moving southeastwards across the country. Skies will brighten from the north though, to give a dry afternoon with plenty of sunshine. Continuing to feel cool in the northwesterly breeze. Maximum temperature 21 °C.

Tonight:

It will be a dry evening and night with patchy cloud and some decent clear periods. Turning a little chilly in some rural spots as winds slowly ease. Minimum temperature 12 °C.

Tuesday:

Tuesday will be a fine day with lots of sunshine, though patchy cloud may turn this hazy across the west of the country. Feeling pleasantly warm in gentle winds. Maximum temperature 21 °C.

Outlook for Wednesday to Friday:

Some cloud is expected on Wednesday and Thursday, though it should stay largely dry with sunshine at times, this perhaps more prevalent on Friday. Light winds, and becoming increasingly warm.

Many parts of the UK are expected to be part way through a period of high temperatures and humidity at the start of this period. The duration, geographical extent and intensity of the heat are all rather uncertain at present, but there is the potential for some very hot weather to be realised, especially across some inland southern and eastern areas. With this also comes the possibility of thunderstorms, in part because of the high temperatures, but also in association with any frontal systems moving in from the west, which would ultimately usher in cooler and fresher conditions. Towards the latter part of the period, northwestern areas stand a greater chance of experiencing rather more changeable conditions, with drier and occasionally hotter spells more likely further southeast.

A continuation of the broad themes from earlier in the month at first, with high pressure probably dominating the south and lower pressure more favoured to affect the north and northwest. Temperatures are likely to end up above average overall with a continued, and perhaps higher than normal, chance of occasional hot spells or heatwaves, especially further to the southeast. However, by the turn of the month, there is a signal for perhaps more widely unsettled weather to develop, though the details of this remain rather uncertain.