Best time to visit Olympic National Park
The best time to visit Olympic National Park is July–August, judged on twenty years of weather records and the events worth going for.
Olympic National Park, Washington, United States
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 3.9 °C / 39 °F | -1.5 °C / 29 °F | 373 mm / 14.7 in | neither best nor good |
| February | 3.8 °C / 39 °F | -2.1 °C / 28 °F | 238 mm / 9.4 in | neither best nor good |
| March | 5.3 °C / 42 °F | -1.4 °C / 29 °F | 282 mm / 11.1 in | neither best nor good |
| April | 8.1 °C / 47 °F | 0.1 °C / 32 °F | 183 mm / 7.2 in | neither best nor good |
| May | 13.3 °C / 56 °F | 3.8 °C / 39 °F | 115 mm / 4.5 in | neither best nor good |
| June | 16 °C / 61 °F | 6.7 °C / 44 °F | 83 mm / 3.3 in | good month |
| July | 20.1 °C / 68 °F | 9.5 °C / 49 °F | 31 mm / 1.2 in | best month |
| August | 20.4 °C / 69 °F | 9.8 °C / 50 °F | 43 mm / 1.7 in | best month |
| September | 17.1 °C / 63 °F | 7.3 °C / 45 °F | 113 mm / 4.4 in | good month |
| October | 11.2 °C / 52 °F | 3.1 °C / 38 °F | 258 mm / 10.1 in | neither best nor good |
| November | 6 °C / 43 °F | -0.4 °C / 31 °F | 404 mm / 15.9 in | neither best nor good |
| December | 3 °C / 37 °F | -2.2 °C / 28 °F | 383 mm / 15.1 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: good
- JJuly: best
- AAugust: best
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- July–August
- Good
- June, September
Why these months
June · good
In its favour: feels like (high) 15.1 °C / 59 °F, share of daylight that is sunny 77%, precipitation 83 mm / 3.3 in, average daily high 16 °C / 61 °F, days with heavy rain 2.5 days, wet days 11.4 days, average daily low 6.7 °C / 44 °F, relative humidity 75%.
July · best
In its favour: feels like (high) 20.2 °C / 68 °F, average daily high 20.1 °C / 68 °F, precipitation 31 mm / 1.2 in, share of daylight that is sunny 86%, wet days 5.2 days, days with heavy rain 0.9 days, average daily low 9.5 °C / 49 °F, relative humidity 70%.
August · best
In its favour: feels like (high) 20.2 °C / 68 °F, average daily high 20.4 °C / 69 °F, precipitation 43 mm / 1.7 in, share of daylight that is sunny 86%, wet days 5.8 days, days with heavy rain 1.3 days, average daily low 9.8 °C / 50 °F, relative humidity 70%.
September · good
In its favour: feels like (high) 15.9 °C / 61 °F, share of daylight that is sunny 81%, average daily high 17.1 °C / 63 °F, precipitation 113 mm / 4.4 in, wet days 10.2 days, days with heavy rain 3.9 days, average daily low 7.3 °C / 45 °F, relative humidity 74%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: good
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- June–September
- Good
- May
Why these months
May · good
In its favour: average daily high 13.3 °C / 56 °F, precipitation 115 mm / 4.5 in, feels like (high) 11.8 °C / 53 °F, share of daylight that is sunny 75%, daylight per day 15.2 h, average daily low 3.8 °C / 39 °F, days with heavy rain 4 days, wind (daily max) 9 km/h / 5 mph.
Against: wet days 14.2 days.
June · best
In its favour: average daily high 16 °C / 61 °F, precipitation 83 mm / 3.3 in, feels like (high) 15.1 °C / 59 °F, average daily low 6.7 °C / 44 °F, share of daylight that is sunny 77%, daylight per day 15.9 h, days with heavy rain 2.5 days, wet days 11.4 days, wind (daily max) 9 km/h / 6 mph.
July · best
In its favour: average daily high 20.1 °C / 68 °F, precipitation 31 mm / 1.2 in, wet days 5.2 days, days with heavy rain 0.9 days, feels like (high) 20.2 °C / 68 °F, average daily low 9.5 °C / 49 °F, share of daylight that is sunny 86%, daylight per day 15.5 h, wind (daily max) 8 km/h / 5 mph.
August · best
In its favour: average daily high 20.4 °C / 69 °F, precipitation 43 mm / 1.7 in, wet days 5.8 days, days with heavy rain 1.3 days, feels like (high) 20.2 °C / 68 °F, average daily low 9.8 °C / 50 °F, share of daylight that is sunny 86%, daylight per day 14.2 h, wind (daily max) 8 km/h / 5 mph.
September · best
In its favour: average daily high 17.1 °C / 63 °F, precipitation 113 mm / 4.4 in, feels like (high) 15.9 °C / 61 °F, average daily low 7.3 °C / 45 °F, share of daylight that is sunny 81%, daylight per day 12.5 h, wet days 10.2 days, days with heavy rain 3.9 days, wind (daily max) 8 km/h / 5 mph.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Alpental, 182 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 0.9 °C | 0.6 °C | 2.2 °C | 5.5 °C | 11.8 °C | 15.1 °C | 20.2 °C | 20.2 °C | 15.9 °C | 9.1 °C | 3.2 °C | 0 °C |
| Days with heavy rain | 12 days | 8.7 days | 10.3 days | 7 days | 4 days | 2.5 days | 0.9 days | 1.3 days | 3.9 days | 8.3 days | 12.4 days | 12.2 days |
| Time rain usually falls | 10 pm | 4 pm | 4 pm | 4 pm | 3 pm | 3 pm | 2 pm | 4 pm | 4 pm | 3 pm | 3 pm | 4 pm |
| Sunshine per day | 4.4 h | 5.8 h | 7.4 h | 9.6 h | 11.4 h | 12.3 h | 13.4 h | 12.3 h | 10.1 h | 7.2 h | 4.7 h | 4 h |
| Relative humidity | 88% | 84% | 82% | 78% | 75% | 75% | 70% | 70% | 74% | 81% | 86% | 88% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 2 µg/m³ | 2.7 µg/m³ | 3.6 µg/m³ | 4.2 µg/m³ | 4.2 µg/m³ | 4.4 µg/m³ | 3.3 µg/m³ | 4.6 µg/m³ | 5.1 µg/m³ | 3.4 µg/m³ | 2.6 µg/m³ | 2.3 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 4.1 µg/m³ | 5.5 µg/m³ | 7.1 µg/m³ | 7.6 µg/m³ | 6.9 µg/m³ | 6.9 µg/m³ | 5.3 µg/m³ | 7.5 µg/m³ | 8.7 µg/m³ | 6.4 µg/m³ | 5.2 µg/m³ | 5.1 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.
World Heritage sites nearby
UNESCO World Heritage sites within 25 km, nearest first.
- Olympic National Park
11 km away