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Denver, United States · Temperate

Denver: best months to visit

September (9.2/10) · February (4.2/10).

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 39.74°N · 104.99°W
⚡ Quick answer
September
Depends on your goals
9.2/10
☀️ Sep
Top score (9.2/10)
🌤️ Jun
Alt. (9.0/10)
Feb
Plus rude (4.2/10)
🏛️ Heritage🌦️ Moderate rain
Photo par Ryan De Hamer via Unsplash
Decide

When to visit Denver?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In Denver, September and June clearly stand out. February concentrates the least favorable conditions.
Top & avoid
🏆 September · 9.2 June · 9.0 August · 8.8 July · 8.6 ⚠️ February · 4.2
4.2
Jan
4.2
Feb
4.5
Mar
7.6
Apr
7.9
May
9.0
Jun
8.6
Jul
8.8
Aug
9.2
Sep
8.2
Oct
4.5
Nov
4.3
Dec
Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

Denver offers 7 comfortable months, without any month really to avoid. The gap stays moderate: 9.2 in September vs 4.2 in February.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 7 comfortable months (Apr · May · Jun · Jul · Aug · Sep · Oct)
MonthT° minT° maxRain %mm/daySunScoreVerdict
🌥️ January →18°F41°F11%0.7mm6.9h4.2/10Decent period
🌥️ February →16°F43°F13%0.9mm7.5h4.2/10Decent period
🌥️ March →25°F54°F19%1.7mm8.2h4.5/10Decent period
☀️ April →34°F63°F18%1.5mm9.2h7.6/10Best period
☀️ May →43°F70°F27%2.8mm9.4h7.9/10Best period
☀️ June →55°F84°F16%1.4mm10.5h9.0/10Best period
☀️ July →61°F90°F15%1.0mm10.5h8.6/10Best period
☀️ August →59°F88°F17%1.2mm9.9h8.8/10Best period
☀️ September →52°F82°F11%0.8mm9.1h9.2/10Best period
☀️ October →39°F70°F11%0.8mm8.0h8.2/10Best period
🌥️ November →28°F54°F10%0.6mm6.5h4.5/10Decent period
🌥️ December →23°F46°F9%0.5mm6.3h4.3/10Decent period
📊 Quick read
Optimal window
Apr → Oct
Good transition
Mar · Nov
Tough period
none
🌡️ Detailed conditions (September)
🌡️ Feel
Warm
☀️ UV
6.6 · Moderate-Strong
💧 Humidity feel
39°F · Dry
☔ Rain
11% · 0.8 mm/day
🌅 Sunshine
9.1h/day
10-year trend

Annual temperatures — Denver

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

T° maxT° meanT° min32°36°39°43°46°50°54°57°61°64°68°201620172018201920202021202220232024202568°F — decade peak (2025)+1.64°F / decade
Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🏛️ Heritage🍴 Gastronomy☔ Indoor sights
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Denver

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a city break.

Country · United States

🗣️LanguageEnglish
💶CurrencyUS Dollar ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5

🌡️ Climate

🌍Climate typeTemperate
📈Climate trend ⓘStable
🔥Hottest monthJuly · 90°F
❄️Coolest monthJanuary · 41°F
🌧️Rainiest month ⓘMay · 27%

🏛️ City break

📅Tourist peak seasonJune → August
☔Indoor sights ⓘYear-round
🚇Public transportGood
Explore

Related destinations & guides

If this destination doesn't fit your dates, here are alternatives and guides.

Location

Where is Denver ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Temperate climate with a 9.2 → 4.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
39.74°N · 104.99°W
Questions

Frequently asked questions

What is the best time to visit Denver?
September is the best month with 82°F highs, 52°F lows, 9.1h of sunshine and 11.0% rainy days. The months of September & June offer comparable conditions.
How many hours of sunshine does Denver get in September?
Denver averages 9.1 sunshine hours per day in September. It is the sunniest month with a climate score of 8.9/10.
What is the rainiest month in Denver?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Denver in September?
In September, overnight lows reach 52°F, while afternoon highs average 82°F.
Is Denver good in winter?
In winter (December-February), Denver scores 4.1/10 on average — Difficult period — prefer the peak season.. The best month overall remains September with a score of 8.9/10.
When should you avoid Denver?
January is the most difficult month to visit Denver, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.