Portland 2024 Climate Summary
The climate of Portland reveals interesting patterns when examined month by month. From temperature swings to rainfall distribution, each season brings its own character.
The temperature profile shows a range from 7.4°C lows in the coldest months to 22.2°C highs in summer, creating a seasonal temperature swing of 7.5°C.
Nov brings the heaviest precipitation at 91mm, contrasting sharply with Feb's mere 5mm. The city receives 649mm annually over approximately 117 rain days.
Compared to the Victoria average, Portland is 1.9°C cooler. Its annual rainfall of 649mm is typical of the region's climate patterns.
Understanding these patterns helps determine the best times to visit Portland. Whether you prefer warm dry conditions or milder temperatures, Portland's climate offers distinct seasonal advantages throughout the year.
Note on methodology: this page summarises 2024 observations only. Long-record climate trend analysis drawn from ACORN-SAT (1910 to present) is in development. For context on multi-decade change, see the BOM State of the Climate report.
Temperature Profile
Monthly maximum and minimum temperature ranges showing seasonal variation in Portland's climate.
Climate Analysis
The temperature data for Portland reveals clear seasonal patterns. The annual average maximum is 17.9°C, while the average minimum is 11.1°C. This 6.8°C range demonstrates the city's seasonal temperature variation.
Rainfall Pattern
Monthly rainfall distribution throughout Portland showing wet and dry season patterns.
Annual rainfall totals 649mm, distributed across the calendar year. The distribution pattern shows distinct wet and dry periods that influence local climate conditions.
Climate Summary Table
Complete monthly climate averages including temperature, precipitation, solar radiation, and humidity data.
| Month | Max °C | Min °C | Rain mm | Rain Days | Solar MJ | Humidity % |
|---|---|---|---|---|---|---|
| January | 21.2 | 14.6 | 71 | 12 | 22.7 | 60% |
| February | 22.2 | 13.5 | 5 | 2 | 23.6 | 50% |
| March | 21.9 | 13.7 | 14 | 4 | 17.6 | 51% |
| April | 16.9 | 11.3 | 54 | 13 | 9.8 | 58% |
| May | 15.9 | 9.7 | 23 | 6 | 8.5 | 63% |
| June | 13.2 | 7.6 | 37 | 7 | 6.4 | 62% |
| July | 13.0 | 7.4 | 84 | 13 | 7.1 | 62% |
| August | 16.2 | 9.4 | 70 | 13 | 10.2 | 59% |
| September | 14.8 | 10.0 | 90 | 17 | 11.8 | 59% |
| October | 17.7 | 10.4 | 68 | 12 | 19.1 | 56% |
| November | 19.8 | 12.0 | 91 | 11 | 21.2 | 57% |
| December | 21.5 | 13.2 | 41 | 7 | 24.2 | 53% |