When is dry-skin season worst in Seattle?

Seattle stays in dry-stress conditions all year, peaking in January.

Do you need a humidifier in Seattle?

A room humidifier may help during the high-stress months (the peak season), especially if your indoor air feels dry. Moisturizer remains the first step.

How many dry-stress days does Seattle typically have?

Seattle has about 362 modeled dry-stress days per year, including approximately 20 days in the Enhanced Care range.

Seattle dry-skin forecast

Seattle experiences modeled dry-stress conditions throughout the year, with skin stress peaking in January.

Annual average DSI: 4.9Worst month: January362 dry-stress days/yr

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Dry-skin season, month by month

Average modeled Dry Skin Index for Seattle using 2025 local climatic data, colored by Dermidia care tier.

5.8

5.2

5.1

4.8

4.5

4.3

4.2

4.4

4.9

5.1

5.2

Low RiskFirst AlertSpecial CareEnhanced Care

Seattle has no off-season for skin

Even Seattle's mildest month (August, index 4.2) stays above the dry-stress threshold. It's one of the metros where skin faces drying conditions all 12 months — 20 of those days reach Enhanced Care.

What tends to help in Seattle

Choose a fragrance-free cream or thicker lotion. Helpful ingredients often include glycerin, dimethicone, petrolatum, ceramides, or urea for rough/scaly areas. A room humidifier may also help.

Moisturizer: Choose a fragrance-free cream or thicker lotion. Helpful ingredients often include glycerin, dimethicone, petrolatum, ceramides, or urea for rough/scaly areas.
Room air: Use the humidifier to reduce DSI during high-stress days. If you have a humidity gauge, many winter rooms benefit from moving out of the very dry range, for example toward about 40-50% RH when the building allows it. Reduce use if windows fog, surfaces feel damp, or condensation appears.

If you have eczema, diabetes, poor circulation, immune suppression, open cracks, bleeding, signs of infection, or persistent itching, follow your clinician's plan and seek medical advice.

Common questions

When is dry-skin season worst in Seattle?: Seattle stays in dry-stress conditions all year, peaking in January.
Do you need a humidifier in Seattle?: A room humidifier may help during the high-stress months (the peak season), especially if your indoor air feels dry. Moisturizer remains the first step.
How many dry-stress days does Seattle typically have?: Seattle has about 362 modeled dry-stress days per year, including approximately 20 days in the Enhanced Care range.

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