Seaside weather in May: Seaside, Oregon: normal highs, lows, rain and records for May
Seaside in May has a normal high of 60°F and a normal low of 46°F, a daily mean of 53°F, rising from 58°F on the 1st to 61°F by the 31st. Measurable precipitation falls on 14 days in a normal May, 3.87 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 8°C, 98 mm of precipitation in May.
- NOAA stationSeaside
- Station IDUSC00357641
- Location45.99°N 123.92°W
- Elevation10 ft (3 m)
- Population7,110
- Jan 52° 39°
- Feb 53° 38°
- Mar 54° 40°
- Apr 56° 42°
- May 60° 46°
- Jun 62° 50°
- Jul 65° 53°
- Aug 66° 54°
- Sep 67° 50°
- Oct 62° 46°
- Nov 55° 42°
- Dec 51° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Seaside in May?
The normal high is 60°F and the normal low 46°F, for a daily mean of 53.0°F. May is 4.0°F warmer than April and 3.2°F cooler than June. May is the 6th warmest month of the year in Seaside and the 8th wettest. Across the month the normal high rises 3°F, from 58°F on May 1 to 61°F on May 31. From one year to the next May's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Mays in three average between 51°F and 55°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 50%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 58°F | 44°F | 50% | 34% |
| May 8 | 59°F | 45°F | 47% | 31% |
| May 15 | 60°F | 46°F | 44% | 29% |
| May 22 | 60°F | 47°F | 43% | 27% |
| May 31 | 61°F | 49°F | 40% | 25% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 58°F | 44°F | 50% | 34% | 14 h 20 min |
| May 2 | 58°F | 44°F | 50% | 34% | 14 h 20 min |
| May 3 | 58°F | 44°F | 50% | 33% | 14 h 20 min |
| May 4 | 58°F | 44°F | 49% | 33% | 14 h 30 min |
| May 5 | 59°F | 44°F | 49% | 32% | 14 h 30 min |
| May 6 | 59°F | 45°F | 48% | 32% | 14 h 30 min |
| May 7 | 59°F | 45°F | 48% | 32% | 14 h 30 min |
| May 8 | 59°F | 45°F | 47% | 31% | 14 h 40 min |
| May 9 | 59°F | 45°F | 47% | 31% | 14 h 40 min |
| May 10 | 59°F | 45°F | 46% | 31% | 14 h 40 min |
| May 11 | 59°F | 46°F | 46% | 30% | 14 h 40 min |
| May 12 | 59°F | 46°F | 45% | 30% | 14 h 50 min |
| May 13 | 60°F | 46°F | 45% | 30% | 14 h 50 min |
| May 14 | 60°F | 46°F | 45% | 29% | 14 h 50 min |
| May 15 | 60°F | 46°F | 44% | 29% | 14 h 50 min |
| May 16 | 60°F | 46°F | 44% | 29% | 15 h |
| May 17 | 60°F | 47°F | 44% | 29% | 15 h |
| May 18 | 60°F | 47°F | 44% | 28% | 15 h |
| May 19 | 60°F | 47°F | 43% | 28% | 15 h |
| May 20 | 60°F | 47°F | 43% | 28% | 15 h 10 min |
| May 21 | 60°F | 47°F | 43% | 28% | 15 h 10 min |
| May 22 | 60°F | 47°F | 43% | 27% | 15 h 10 min |
| May 23 | 61°F | 48°F | 42% | 27% | 15 h 10 min |
| May 24 | 61°F | 48°F | 42% | 27% | 15 h 10 min |
| May 25 | 61°F | 48°F | 42% | 27% | 15 h 20 min |
| May 26 | 61°F | 48°F | 41% | 26% | 15 h 20 min |
| May 27 | 61°F | 48°F | 41% | 26% | 15 h 20 min |
| May 28 | 61°F | 48°F | 41% | 26% | 15 h 20 min |
| May 29 | 61°F | 48°F | 41% | 26% | 15 h 20 min |
| May 30 | 61°F | 49°F | 41% | 26% | 15 h 30 min |
| May 31 | 61°F | 49°F | 40% | 25% | 15 h 30 min |
- Normal high
- 60°FMay average
- Normal low
- 46°FMay average
- Precipitation
- 3.87 inmonth total
- Days with precipitation
- 140.01 inch or more
- Daylight
- 14 h 20 min to 15 h 30 minMay 1 to May 31
- Days at 70°F or more
- 2
- Days at 80°F or more
- 1
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00357641; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Seaside in May?
On a given May day the chance of 0.01 inch or more is 45% on average, highest around May 1 (50%). In all, 3.87 in falls on 14 days of a normal May, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00357641.
What are the records for May in Seaside?
The warmest May temperature on this station's record (since 1930) is 86°F, on May 19, 1978; the coldest is 29°F, on May 1, 1954. The wettest May brought 8.90 in (1933).
The May mean against the 1991-2020 normal of 53.0°F: 2025 52.3°F (−0.7). 0 of 1 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2025 | 52.3°F | −0.7°F | 2.83 in |
Source: records: ACIS, station USC00357641; recent months: ACIS, station USC00357641. Records and recent months use complete months only.
How does May in Seaside compare across Oregon?
Across the 105 places PlainClimate covers in Oregon, May normal highs run from 54°F in Government Camp to 76°F in Ontario; Seaside's is 60°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.