9. June 2026
Wednesday Weather
KWT WEATHER WATCH ISSUED FOR RAIN AND BLUSTERY WINDS ON THURSDAY
If you've been wondering where summer disappeared to, don't worry, it hasn't packed its bags and emigrated just yet! There are growing signs that high pressure will make a welcome return this weekend, bringing much warmer temperatures and some much-needed sunshine back to Cornwall. Temperatures could climb well into the 20s°C by the weekend, which will certainly feel very different from the cool conditions we've been experiencing recently.
Before anyone starts dusting off the paddling pools and declaring a heatwave, it's worth remembering that an official heatwave in Cornwall requires temperatures of 25°C or above for three consecutive days. So while it may feel much more summery, we're not quite there yet. The big question is whether this is simply a return to pleasant June warmth or the beginning of another spell of very warm weather as we experienced towards the end of May. We'll be keeping a close eye on developments over the coming days.
For Wednesday, all eyes turn to the Atlantic, where another area of low pressure is lurking, ready to influence our weather. It will be another day where Cornwall gets a little bit of everything. Expect a mixture of sunshine, clouds, blue skies and showers. Some of these showers could be quite heavy at times,s and most places are likely to catch at least one passing shower during the day.
The good news is that during the afternoon, the showers should become more scattered, allowing many areas to enjoy longer bright spells and even some decent sunshine. As always in Cornwall, one minute you'll be reaching for your sunglasses; the next you'll be wondering where that rain cloud appeared from!
By the evening, there will still be the odd shower around, but many places will stay dry with variable cloud and some late sunny breaks.
Temperatures will range from around 10°C to 15°C during the morning, reaching 11°C to 18°C in the afternoon before easing back to 10°C to 15°C during the evening. Winds will come from a west to northwesterly direction at around 10-30mph, adding a bit of a cool feel in exposed areas.
For those affected by pollen, grass pollen remains HIGH across Cornwall, with nettle pollen also making its presence known. If you've been sneezing more than usual, blaming the weather, the dog, the cat, the neighbour's garden and possibly your own family, pollen is likely the real culprit! UV levels will be MODERATE TO HIGH whenever the sunshine breaks through, so don't be fooled by the clouds, as UV can still be surprisingly strong during June.
Looking ahead to Thursday, KWT is issuing a weather watch for rain and blustery winds. It won't be a complete washout, so don't cancel all your plans just yet, but there will be spells of light to moderate rain moving through on and off during the day. Low cloud could also make things rather grey and gloomy at times, with mist developing over some higher ground and coastal locations.
Winds won't be anywhere near as fierce as the blast we experienced over the weekend, but gusts of 30-50mph are possible in exposed locations, particularly along the coast. More details and any updates will follow tomorrow as confidence increases.
The official KWT Washing Paw Rating for Wednesday is 2 out of 4 paws. There will be some dry opportunities to get outside, hang the washing out and enjoy the brighter spells, but with showers never too far away, you'll need one eye on the sky and one hand ready to rescue the washing before the next shower arrives!
A quick heads-up that tomorrow's updates may be slightly delayed because our miniature tornado, otherwise known as granddaughter Poppy, is visiting. Unlike Atlantic low-pressure systems, she doesn't need warm seas or favourable conditions to develop; she arrives fully formed, reaches maximum intensity within minutes, and leaves a trail of toys stretching from one end of the house to the other!
Have a lovely evening, everyone, and keep those weather photos coming in.
Kind regards,
KWT Dave