Honestly, if you're planning a trip to Britain’s Ocean City today, Thursday, January 15, 2026, you've probably already realized that "ocean city" usually translates to "bring a raincoat." Plymouth is doing exactly what it does best this evening—staying damp.
Right now, it’s about 40°F outside, but with the humidity sitting at a staggering 99%, it feels more like 34°F. That’s that classic Devon "damp cold" that gets right into your bones. There are light showers coming down, and the wind is pulling in from the southwest at 9 mph. Basically, it's the kind of night where you want to be tucked away in a pub on the Barbican rather than walking the Hoe.
Why the Weather Forecast for Plymouth Devon is a Moving Target
People always ask why the weather here changes so fast. It's the English Channel. It acts like a giant radiator in the winter and a massive air conditioner in the summer. Because we're tucked right on the edge of the Southwest peninsula, we get hit by the prevailing winds straight off the Atlantic.
Today's forecast is a perfect example of that coastal volatility. While the daytime high hit 47°F, the low is dropping toward 37°F tonight. We’ve seen a 65% chance of rain during the day, which is tapering off slightly to 50% as we move into the late hours. The wind has actually shifted a bit, now coming from the northwest at 9 mph.
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If you're looking at the data from the Met Office or local stations like the one at Mount Batten, you'll see this pattern everywhere. High humidity, consistent breeze, and "liquid sunshine."
Surviving the "Plymouth Mist"
There’s a specific kind of weather here—locals sometimes call it "mizzle"—which is a mix of mist and drizzle. It’s not quite raining, but you’ll be soaked in ten minutes.
Today’s stats show exactly why this happens:
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- Temperature: Exactly 40°F currently.
- Precipitation: 44% chance of light showers right now.
- Visibility: Lower than usual due to the 99% humidity levels.
- UV Index: 0 (Standard for a January night in Devon).
The big mistake people make is trusting a clear sky. In Plymouth, a clear sky at 10:00 AM can mean a torrential downpour by noon. The clouds roll over Dartmoor, get heavy, and just dump everything right as they hit the coast.
What to Expect for the Rest of the Week
Looking ahead, the weather forecast for Plymouth Devon suggests we aren't quite done with the dampness. While tomorrow might see some "sunny intervals" (the UK term for 'the sun might come out for five minutes'), the general trend for mid-January in Devon is cool and breezy.
Historically, January is one of our wettest months. We usually see about 85 mm of rain spread across 21 days. So, if it feels like it’s always raining, it’s because, well, statistically, it is. But that’s the trade-off for having some of the most stunning green coastal paths in the country.
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Actionable Advice for Navigating Plymouth Today
- Layer Up, But Make It Waterproof: A heavy wool coat is a disaster here because it just soaks up the moisture. You want a technical shell over a fleece.
- Check the Tide Times: If you're heading to the Hoe, the wind feels twice as strong when the tide is high and pushing that salt spray onto the promenade.
- Park Smart: If the wind gusts pick up (they're currently steady at 9 mph), avoid parking under the trees near Victoria Park; those old branches don't like the winter gales.
- Embrace the Indoors: On a night like this, with a 44% rain chance and 34°F feels-like temp, it’s the perfect time to visit the National Marine Aquarium or the Box.
The weather forecast for Plymouth Devon might look a bit grim on paper, but there's something kinda beautiful about the way the light hits the Sound when a storm is clearing. Just make sure you've got your boots on.
Keep an eye on the local weather stations at Plymouth Municipal Airport and the Met Office for real-time updates as those southwest winds can bring in a new front faster than you can finish a pasty.