Honestly, if you're looking at the weather forecast Mumbai Maharashtra right now, you’re probably seeing a lot of "sunny" icons and thinking it's just another standard tropical day. But there is a lot more going on beneath that 78°F surface.
Mumbai in mid-January is usually a sweet spot, but 2026 is throwing some weird curveballs. We started the year with unseasonal rain that basically soaked the New Year's parties, which is super rare for this time of year. Since then, the city has settled into a "winter" rhythm that feels more like a gentle autumn for anyone coming from the north.
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Today, Sunday, January 18, 2026, we’re looking at a high of 80°F and a low of 71°F. It’s sunny. It’s clear. But the real story is the wind and the air.
The "Winter" That Isn't Really Winter
People from Delhi or Pune laugh when Mumbaikars pull out their sweaters. I get it. But when you live in a city that usually feels like a steam room, a 71°F night feels like the Arctic.
The current conditions are actually pretty decent. We’ve got a 4 mph breeze coming from the north, which is keeping things from getting too sticky. Humidity is sitting at 62%. That’s high for a desert, but for Mumbai? That’s basically "dry" air.
What's interesting is how the temperatures are trending. Tomorrow, Monday, January 19, and Tuesday, January 20, the mercury is going to hold steady at that 80°F to 81°F range. It’s the kind of weather where you leave the house in a light shirt, feel great at noon, and then realize you kind of need a hoodie by 8 PM when the sea breeze kicks in.
Why You Should Care About the UV Index
Here is something most people ignore: the UV index is hitting 6 today. In a few days, it’s staying at that level. That's "high" on the scale.
Because the air feels "cool" (relatively speaking), people forget they’re getting baked by the sun. If you’re planning to hang out at Marine Drive or take a boat to Elephanta, you'll feel the burn before you feel the heat.
The sky is going to be clear for the next week. No rain. Zero percent chance. It’s a complete 180 from the 5.37 mm of rain we saw at the start of the month.
The Air Quality Situation
We have to talk about the haze. It’s the elephant in the room.
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The AQI (Air Quality Index) in Mumbai today is hovering around 173. That’s officially "Poor." While the weather looks picture-perfect on your phone, the reality on the ground is a bit grittier. PM2.5 levels are high enough that if you have asthma or you're just sensitive to pollution, you’re going to feel it in your throat.
The lack of rain means there’s nothing to "wash" the air. We’re relying entirely on the wind to blow the smog out to sea. Right now, those northwest winds are doing a bit of heavy lifting, but not enough to clear the skyline completely.
Looking Ahead: The 10-Day Outlook
If you’re planning a trip or an outdoor event, the window between now and January 28 looks incredibly stable.
- Mid-week (Jan 21-22): Temperatures creep up slightly to 82°F.
- The Weekend (Jan 24): We might see wind speeds pick up to 16 mph. That’s a proper coastal blow. It might actually help the air quality.
- Late January (Jan 28): We see the first sign of change with a 10% chance of rain and some "partly sunny" clouds.
Basically, the "winter" chill is going to stay subtle. We aren't seeing any massive cold waves like the ones hitting the north, but we are seeing a very consistent, dry heat during the day.
How to Actually Prep for Mumbai Weather
Don't trust the temperature alone. The 78°F feels like 85°F when you're standing in the sun at Gateway of India.
- Hydrate more than you think. The wind masks how much you’re sweating.
- Mask up in traffic. If the AQI is 173, standing at a junction in Bandra or Lower Parel is basically like inhaling a tailpipe.
- Check the sea state. If you're heading out on the water, those 14-17 mph winds predicted for next week will make the Arabian Sea a bit choppy.
The weather forecast Mumbai Maharashtra for the rest of January is essentially a gift for travelers, provided you don't mind a bit of haze. It’s stable, predictable, and—for the first time in weeks—blissfully dry.
Keep an eye on the wind direction. When it shifts to the west, as it's expected to do briefly on Thursday, the humidity will spike. That’s when the "real feel" temperature becomes more important than what the thermometer says.
Stay out of the direct sun between 12 PM and 3 PM, grab a bottle of water, and enjoy the few weeks of the year where Mumbai doesn't feel like a sauna.