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The weather in Pasadena in May is hot. The average temperatures are between 22°C and 28°C.
You can expect about 3 to 8 days of rain in Pasadena during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Pasadena in May 2025.
If you’re planning to visit Pasadena in the near future, we highly recommend that you review the 14 day weather forecast for Pasadena before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 10° | 4 | 27 | 0 | 52 mm | Good | Pasadena in January |
| February | 17° / 11° | 4 | 24 | 0 | 43 mm | Good | Pasadena in February |
| March | 21° / 15° | 4 | 27 | 0 | 41 mm | Good | Pasadena in March |
| April | 25° / 18° | 3 | 27 | 0 | 51 mm | Perfect | Pasadena in April |
| May | 28° / 22° | 6 | 25 | 0 | 83 mm | Perfect | Pasadena in May |
| June | 31° / 25° | 8 | 22 | 0 | 118 mm | Ok | Pasadena in June |
| July | 32° / 26° | 11 | 20 | 0 | 143 mm | Ok | Pasadena in July |
| August | 33° / 26° | 12 | 19 | 0 | 176 mm | Ok | Pasadena in August |
| September | 30° / 25° | 11 | 19 | 0 | 188 mm | Ok | Pasadena in September |
| October | 27° / 20° | 5 | 26 | 0 | 80 mm | Perfect | Pasadena in October |
| November | 21° / 15° | 3 | 27 | 0 | 57 mm | Good | Pasadena in November |
| December | 18° / 12° | 4 | 27 | 0 | 49 mm | Good | Pasadena in December |