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Best time to visit Seaside, Oregon, OR, USA

Our verdict

The best time to visit Seaside is September

Seaside can be visited year-round, but based on the ideal climate conditions, cost of travel, and avoiding peak holiday periods, September is the best time to go.

The warmest month of the year in Seaside is August, where the average temperature gets to around 19℃ (66℉), but temperatures can reach as high as 20℃ (69℉) on the hottest days in summer. In the colder months such as December, temperatures usually get down to an average minimum of 5℃ (41℉).

If you’re a sun-chaser and want to visit Seaside when the days are longest, you should visit in August. On average it rains the most days in December, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.

Learn more about when to travel to Seaside, the monthly weather breakdown, FAQs and much more below. Once you’ve decided when you want to go, use our handy tools to find the best prices to suit your budget on flights, transport/transfers, places to stay, and loads more!

Warmest month

August

Least rainfall

July

Most daylight

August

Seaside seasons

Before you continue, it’s important to know when the seasons are in Seaside as they might be different to yours depending on where in the world you’re travelling from. Seaside is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Seaside

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Seaside for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Seaside climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Seaside for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Seaside in January

  • Average temperature: 7℃ (44℉)
  • Average high temperature: 9℃ (47℉)
  • Average low temperature: 5℃ (41℉)
  • Average humidity: 81%
  • Average sunny days: 10 days
  • Average rainfall: 159mm (6") over 19 days
  • Average snow days: 1 days
10 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Seaside in January, make sure you pack a warm jacket or coat.


Seaside in February

  • Average temperature: 7℃ (44℉)
  • Average high temperature: 9℃ (48℉)
  • Average low temperature: 5℃ (41℉)
  • Average humidity: 82%
  • Average sunny days: 8 days
  • Average rainfall: 112mm (4") over 19 days
  • Average snow days: 1 days
8 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Seaside in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Seaside in March

  • Average temperature: 8℃ (46℉)
  • Average high temperature: 10℃ (50℉)
  • Average low temperature: 6℃ (42℉)
  • Average humidity: 81%
  • Average sunny days: 8 days
  • Average rainfall: 103mm (4") over 21 days
  • Average snow days: 1 days
8 days
of pure sunshine
21 days
of showers or rain

What to pack: If you’re heading to Seaside in March, make sure you pack a warm jacket or coat.


Seaside in April

  • Average temperature: 9℃ (48℉)
  • Average high temperature: 11℃ (52℉)
  • Average low temperature: 7℃ (44℉)
  • Average humidity: 81%
  • Average sunny days: 9 days
  • Average rainfall: 77mm (3") over 19 days
9 days
of pure sunshine
19 days
of showers or rain

What to pack: If you’re heading to Seaside in April, make sure you pack a warm jacket or coat.


Seaside in May

  • Average temperature: 12℃ (53℉)
  • Average high temperature: 14℃ (57℉)
  • Average low temperature: 9℃ (48℉)
  • Average humidity: 81%
  • Average sunny days: 15 days
  • Average rainfall: 47mm (2") over 13 days
15 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Seaside in May, make sure you pack a warm jacket or coat.


Seaside in June

  • Average temperature: 13℃ (56℉)
  • Average high temperature: 16℃ (61℉)
  • Average low temperature: 11℃ (51℉)
  • Average humidity: 82%
  • Average sunny days: 15 days
  • Average rainfall: 27mm (1") over 12 days
15 days
of pure sunshine
12 days
of showers or rain

What to pack: If you’re heading to Seaside in June, make sure you pack a warm jacket or coat.


Seaside in July

  • Average temperature: 15℃ (59℉)
  • Average high temperature: 18℃ (64℉)
  • Average low temperature: 12℃ (54℉)
  • Average humidity: 83%
  • Average sunny days: 21 days
  • Average rainfall: 11mm (0") over 7 days
21 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to Seaside in July, make sure you pack a light jumper or hoodie.


Seaside in August

  • Average temperature: 16℃ (60℉)
  • Average high temperature: 19℃ (66℉)
  • Average low temperature: 13℃ (55℉)
  • Average humidity: 84%
  • Average sunny days: 21 days
  • Average rainfall: 11mm (0") over 7 days
21 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to Seaside in August, make sure you pack a light jumper or hoodie.


Seaside in September

  • Average temperature: 15℃ (58℉)
  • Average high temperature: 18℃ (64℉)
  • Average low temperature: 12℃ (54℉)
  • Average humidity: 82%
  • Average sunny days: 17 days
  • Average rainfall: 45mm (2") over 11 days
17 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Seaside in September, make sure you pack a light jumper or hoodie.

Seaside in October

  • Average temperature: 12℃ (54℉)
  • Average high temperature: 14℃ (58℉)
  • Average low temperature: 10℃ (50℉)
  • Average humidity: 81%
  • Average sunny days: 14 days
  • Average rainfall: 106mm (4") over 16 days
14 days
of pure sunshine
16 days
of showers or rain

What to pack: If you’re heading to Seaside in October, make sure you pack a warm jacket or coat.


Seaside in November

  • Average temperature: 9℃ (49℉)
  • Average high temperature: 11℃ (52℉)
  • Average low temperature: 7℃ (45℉)
  • Average humidity: 81%
  • Average sunny days: 8 days
  • Average rainfall: 134mm (5") over 20 days
8 days
of pure sunshine
20 days
of showers or rain

What to pack: If you’re heading to Seaside in November, make sure you pack a warm jacket or coat.


Seaside in December

  • Average temperature: 6℃ (44℉)
  • Average high temperature: 8℃ (46℉)
  • Average low temperature: 5℃ (41℉)
  • Average humidity: 81%
  • Average sunny days: 9 days
  • Average rainfall: 166mm (7") over 21 days
9 days
of pure sunshine
21 days
of showers or rain

What to pack: If you’re heading to Seaside in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Top FAQs

The hottest month of the year in Seaside is usually August, where temperatures tend to rise to around 19℃ (66℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Seaside is generally around July. The dry season often coincides with cooler weather, so you should check the temperatures in July first to make sure it’s still a good time to go.
The rainiest time of year in Seaside is generally around December, although the wetter season can sometimes extend a few months either side of December too.
If you want to get the most out of your time visiting Seaside, or if you're just afraid of the dark, the days in August are usually the longest between sunrise and sunset.

Seaside map