Oceanside, CA weather in May
Oceanside is cool and dry in May: highs average 65°F and nights drop to about 58°F. Rain falls on about 2 days. A great month for outdoor plans.
- Normal high
- 65°F
- Normal low
- 58°F
- Wet days
- 2
- 0.3 in total
- Muggy days
- 0
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 64°F | 65°F |
| Normal low | 56°F | 60°F |
| Chance of a wet day | 7% | 4% |
| Sunrise / sunset | 6:01 am / 7:31 pm | 5:41 am / 7:52 pm |
| Daylight | 13.5 h | 14.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical May day
- 6 am57°Fdew point 52°F
- 9 am67°Fdew point 53°F
- Noon71°Fdew point 54°F
- 3 pm70°Fdew point 54°F
- 6 pm65°Fdew point 54°F
- 9 pm60°Fdew point 53°F
NOAA hourly normals (local standard time) from Camp Pendleton MCAS (7 mi away); average wind 5 mph; clear or few clouds in 65% of daytime hours, mostly cloudy or overcast in 26%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow2 of 31
- Notable rainat least 0.10 in1 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 0.3 in; a dry May brings about 0.0 in and a wet one about 0.5 in (25th and 75th percentiles). Days with half an inch or more are rare.
How May varies from year to year
- Warmest May, 1991-20202014: average high 72°F
- Coolest May1995: average high 62°F
- Wettest May2015: 1.4 in
- Driest May1991: no measurable precipitation
- Highest reading95°F (May 13, 2014)
- Lowest reading44°F (May 1, 2010)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 63°F | 65°F | 66°F |
| Normal low | 53°F | 58°F | 61°F |
| Wet days | 3 | 2 | 1 |
| Comfortable days | 10 | 16 | 20 |
| Daylight | 13.0 h | 13.9 h | 14.3 h |
Highs change by +2°F from April and +1°F into June.
Nearby alternatives in May
- Warmer: Escondido, CA18 mi · high 77°F · 3 wet days
How Oceanside ranks in May
- Normal high340th warmest of 378 cities; 56th of 60 in California
- Wet days26th driest of 378
- Comfortable days72nd most of 339
Heating and cooling
May has 120 heating degree days and 4 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.
Questions
How cold is Oceanside in May?
The normal high is 65°F and the normal low is 58°F. From 1991 to 2020 the coldest May reading was 44°F (most recently on May 1, 2010).
Does it rain a lot in Oceanside in May?
About 2 days in May have at least 0.01 in of precipitation, and the normal total is 0.3 in. The wettest May in 1991-2020 was in 2015 (1.4 in); the driest was in 1991, with no measurable precipitation.
Is May a good time to visit Oceanside?
May ranks 4th of 12 months on our comfort score for Oceanside (77 out of 100). It has about 16 comfortable days. The best months are June and October.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Oceanside Marina (USC00046377), 1.3 mi NW of the city center, 10 ft (60 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Oceanside Muni Airport (USW00053121), 2.4 mi NE of the city center, 28 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Camp Pendleton MCAS (USW00003154), 7.4 mi NNE of the city center, 75 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: March AFB (USW00023119), 49 mi N of the city center, 1,516 ft (1,446 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Marine Corps Air Station (722926-03154), 7.6 mi N of the city center, 70 ft . Hourly observations, 1991-2020.