You’ve seen the postcards. Those misty, mirror-like reflections on Harrison Lake and the steam rising from the pools. It looks like a perpetual spa day. But if you’re planning a trip, honestly, the weather for Harrison Hot Springs is way more of a wildcard than the travel brochures let on.
It’s not just "rainy BC weather."
The village sits in a unique geographic pocket where the Fraser Valley meets the Lillooet Ranges. This creates a microclimate that can be sunny when Vancouver is soaking and freezing when Agassiz is just chilly.
Right now, as of Saturday, January 17, 2026, it’s actually gorgeous out. We’re looking at a sunny day with a high of 50°F. That’s surprisingly mild for mid-January. Usually, you’re looking at a "don’t forget the wool socks" kind of vibe, but today the northeast wind is a gentle 6 mph, keeping things crisp but manageable. If you’re stepping outside, it feels like 37°F, so yeah—still jacket territory.
The Seasonal Reality Check
Most people think summer is the only time to visit. They’re kinda right, but also totally wrong.
July and August are the heavy hitters. You get about 247 hours of sunshine in July. The lake actually becomes swimmable, though "refreshing" is a polite way to describe glacier-fed water. August is the hottest month, averaging around 77°F, but it’s the humidity that’ll get you. It stays around 76%, making those "mildly cool" nights feel a bit more like a damp hug.
Then there's the rain.
If you hate getting wet, stay far away in November. It’s statistically the wettest month, dumping an average of 10.96 inches of rain. January isn't far behind. You’ll see about 9.54 inches this month. But here’s the thing: the rain is what makes the hot springs feel so much better. There is something fundamentally "West Coast" about sitting in a 100°F mineral pool while a cold drizzle hits your face.
What’s Coming This Week?
Don't get too comfortable with today's sun. The weather for Harrison Hot Springs is about to take a sharp turn into "Winter Wonderland" territory.
Tomorrow, Sunday, January 18, stays sunny with a high of 49°F, but the overnight low drops to 30°F. By Monday and Tuesday, the clouds move in, and the temperature starts a slow slide.
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The real story starts Thursday, January 22.
We’re forecasting snow.
It’s not just a dusting, either. We’re looking at a 20% chance of snow during the day and 35% at night. By Friday and next Saturday, those snow showers become more frequent as the high temperature struggles to even hit 34°F. If you’re driving up the 1 or 7, you’ll definitely want the winter tires on. This isn't the coast where snow vanishes in an hour; in the valley shadows, it sticks.
The Hot Springs Factor
Does the weather actually matter when the water is that hot?
Kinda.
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The "Sulphur" spring hits a blistering 145°F at the source. By the time it reaches the public pools or the resort, they cool it down. Usually, the indoor sitting pools are kept between 100°F and 103°F.
If it’s a snowstorm outside next Thursday, the outdoor pools are the place to be. The contrast is basically the whole point of the trip. The resort even has heated clay tile decks—frost-proof stuff—so you don't freeze your toes off walking from the locker room to the water.
Why the Wind Matters Here
You might notice the wind is almost always coming from the northeast right now. That’s the "Harrison Wind."
Because of the way the lake is shaped—long, narrow, and flanked by mountains—it acts like a wind tunnel. In the summer, this is a godsend for kite surfers. In the winter, it’s why a 41°F day can feel like it’s biting through your sweater.
Today’s wind is light, but it’s going to kick up to 10 mph tomorrow. That’s enough to make the lake choppy and the "feels like" temperature drop significantly.
Actionable Tips for Your Trip
Stop checking the Vancouver forecast and hoping it applies to Harrison. It doesn't.
- Pack in layers, even in summer. The mountain shadows make the temperature drop fast once the sun goes behind the peaks.
- Check the "Freshet" reports in Spring. Late May and June can see the lake level rise fast due to snowmelt, which can sometimes flood the lagoon trails.
- Winter tires are non-negotiable. Even if the village is clear, the Highway 7 corridor can get nasty fast during those snow showers predicted for next week.
- Book the indoor pools for mid-day. If you’re visiting during the rainy November/January stretch, use the outdoor pools at night for the atmosphere, but hit the indoor ones when you just need to dry out.
The weather for Harrison Hot Springs is currently in a rare "sunny window," so if you’re nearby, honestly, get out there today or tomorrow. By next weekend, you’ll be digging out the snow shovel.
Stay dry, keep a hat in your car, and don't underestimate that northeast breeze. It’s what makes this place feel like the wild edge of the valley.