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Miami vs Portland weather: climate comparison
Miami is the warmer of the two, averaging 77°F (25°C) over the year against 54°F (12°C) in Portland. Portland is wetter, with 50.4 in (1280 mm) of precipitation a year to Miami's 45.4 in (1154 mm). Below: every month side by side, from 30 years of ERA5 data (1996–2025).
- Mean temperature
- 24.8°C Miami
12.0°C Portland - Annual precipitation
- 1154.4 mm Miami
1279.7 mm Portland - Rainy days a year
- 162 Miami
146 Portland - Sunshine per day
- 10.5 h Miami
8.5 h Portland
Month by month
| Month | Miami | Portland |
|---|---|---|
| January | 23.3°C | 8.1°C |
| February | 24.3°C | 9.5°C |
| March | 25.4°C | 12.0°C |
| April | 26.9°C | 14.8°C |
| May | 28.4°C | 18.6°C |
| June | 29.3°C | 22.2°C |
| July | 30.3°C | 27.6°C |
| August | 30.4°C | 27.9°C |
| September | 29.5°C | 23.9°C |
| October | 28.1°C | 16.8°C |
| November | 26.0°C | 11.0°C |
| December | 24.4°C | 7.7°C |
Year at a glance
| Measure | Miami | Portland |
|---|---|---|
| Mean annual temperature | 24.8°C | 12.0°C |
| Warmest month (avg high) | Aug · 30°C | Aug · 28°C |
| Coldest month (avg low) | Jan · 18°C | Feb · 2°C |
| Annual range (warmest high − coldest low) | 13°C | 26°C |
| Annual precipitation | 1154.4 mm | 1279.7 mm |
| Rainy days per year | 162 | 146 |
| Wettest / driest month | Jun / Feb | Dec / Jul |
| Average sunshine per day | 10.5 h | 8.5 h |
In short: Miami is the warmest overall (24.8°C mean); Portland gets the most precipitation (1279.7 mm a year); Miami is the sunniest (10.5 h a day on average); Miami has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Miami 36.2°C (2024-05-16), Portland 46.0°C (2021-06-28). Record low: Miami 3.3°C (2010-01-10), Portland -15.3°C (1996-02-02).
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Monthly means of daily ERA5 values, 1996–2025, for the grid cells nearest Miami (25.76, -80.20) and Portland (45.52, -122.64).
Which months differ most?
The gap in average highs is widest in December, when Miami runs 30°F / 17°C warmer, and narrowest in August (5°F / 3°C apart). The biggest rainfall difference is in December: Portland gets 6.1 in (156 mm) more on average.
Add a third or fourth city, or swap in any other place, in the full comparison tool. For one city in depth, see the Miami climate and Portland climate pages.
Compare Miami or Portland with another city
Questions people ask
Is Miami warmer than Portland?
Miami is warmer on average: its mean annual temperature is 77°F (25°C) against 54°F (12°C) in Portland (ERA5, 1996–2025).
Which gets more rain, Miami or Portland?
Portland, with about 50.4 in (1280 mm) of precipitation a year and 146 days with at least 1 mm, compared with 45.4 in (1154 mm) and 162 days in Miami.
Which is sunnier, Miami or Portland?
Miami averages more sunshine: 10.5 h a day against 8.5 h. Sunshine duration is modelled from cloud cover.
How reliable is this comparison?
Both cities use the same 30-year reanalysis, so differences are consistent. Absolute values describe a grid cell several kilometres wide and can differ by a degree or two from the airport station.