So, you’re looking at an Oslo weather forecast 10 days out and thinking about packing that light "fall" jacket? Honestly, don't. I've seen too many travelers land at Gardermoen thinking a 38°F afternoon is "manageable" only to be humbled by the damp, bone-chilling humidity that rolls off the Oslofjord.
Right now, as of Friday, January 16, 2026, Oslo is in the thick of its winter mood. It’s not just cold; it’s a specific kind of Norwegian grey that looks like a charcoal sketch.
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The Immediate Outlook: Slush and Snow
If you are in the city today, Friday, the high is hitting $38^\circ\text{F}$. Sounds okay, right? Except there is a 98% chance of snow during the day. Because the temperature is hovering just above freezing, that snow is likely to be that heavy, wet variety that turns sidewalks into a treacherous slurry of grey "slush."
The humidity is sitting at 95%. That's the real kicker. It makes the $36^\circ\text{F}$ current temp feel like $32^\circ\text{F}$.
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Tonight, the low drops to $34^\circ\text{F}$ under mostly cloudy skies. If you're heading out to Grünerløkka for a drink, watch your step. That daytime slush is going to start firming up into ice as the evening wears on.
The 10-Day Breakdown (The Deep Freeze is Coming)
Looking ahead, the next few days are relatively stable but progressively colder. Saturday and Sunday (January 17-18) are sticking to that $34^\circ\text{F}$ high and $32^\circ\text{F}$ low pattern. You’ll see some snow showers, especially on Sunday morning, but nothing that’s going to bury the city just yet.
Monday, January 19, marks the transition. We're looking at a mix of rain and snow with a high of $33^\circ\text{F}$, but the overnight low plummets to $23^\circ\text{F}$.
The Mid-Week Arctic Dip
This is where the Oslo weather forecast 10 days outlook gets interesting—and much colder. From Tuesday, January 20, through the rest of the week, we leave the "slush zone" and enter the "true winter" phase.
- Tuesday, Jan 20: High $23^\circ\text{F}$, Low $19^\circ\text{F}$. Mostly cloudy.
- Wednesday, Jan 21: High $24^\circ\text{F}$, Low $18^\circ\text{F}$. The air will feel much drier.
- Thursday, Jan 22: High $25^\circ\text{F}$, Low $19^\circ\text{F}$.
By next weekend, January 24-25, the temperatures are heading toward the floor. We’re talking highs of $18^\circ\text{F}$ and $17^\circ\text{F}$, with Sunday night potentially hitting a biting $5^\circ\text{F}$.
What the Locals Know (That You Probably Don't)
Most people see "snow" on a forecast and think of a postcard. In downtown Oslo, it’s often more about the "slurry." If you want the actual winter wonderland experience, you have to use the T-bane (the metro).
Take the Line 1 train up to Frognerseteren. It’s only a 30-minute ride from the city center, but the elevation gain changes everything. While the city is dealing with $38^\circ\text{F}$ and rain-snow mixes, the hills are usually much colder and covered in proper, powdery snow. It’s where you’ll find the locals sledding down Korketrekkeren, a 2km-long toboggan run.
The Light Situation
Don't forget the sun. Or the lack thereof. In mid-January, Oslo only gets about 6 to 7 hours of daylight. Today, the sun rose around 9:03 AM and will check out by 3:52 PM. This "Blue Hour" is stunning for photography, but it means you have a very narrow window for outdoor sightseeing before the darkness sets in.
Actionable Survival Tips for the Next 10 Days
Basically, if you're navigating Oslo this week, follow these three rules:
- Wool, Not Cotton: Norwegians have a saying: "Ull er gull" (Wool is gold). Wear a wool base layer. Cotton traps moisture and will make you freeze the second you stop walking.
- Waterproof Footwear: With the rain-snow mix forecast for the next few days, your shoes will get wet. If they aren't waterproof, your day is ruined.
- Check the "Feels Like": Always look at the wind chill. With an 8 mph wind from the east today, that "mild" $38^\circ\text{F}$ is deceptive.
Next Steps for You:
Check your footwear today. If you're wearing sneakers, head to a shop like Oslo City or Steen & Strøm and grab some waterproof boots or at least some heavy wool socks before the temperature drops into the teens next Tuesday. Also, if you plan on visiting the Holmenkollen ski jump, do it before Monday while the visibility is still decent before the heavier clouds move in mid-week.