Moon · May 2027
Moon calendar for San Mateo, California, United States: May 2027
Daily moon phases, illumination, moonrise and moonset in San Mateo, California, United States for May 2027. Full moon: May 20, 2027. All times are shown in the local time of San Mateo, California, United States.
Full moonThursday, May 20, 2027, 2:47 AM
New moonThursday, May 6, 2027, 5:45 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waning Crescent | 23% | 3:28 AM | 3:39 PM |
| 2 | Waning Crescent | 15% | 3:39 AM | 4:33 PM |
| 3 | Waning Crescent | 8% | 4:05 AM | 5:43 PM |
| 4 | Waning Crescent | 4% | 4:25 AM | 6:47 PM |
| 5 | New Moon | 1% | 4:50 AM | 8:07 PM |
| 6 | New Moon | 0% | 5:35 AM | 9:28 PM |
| 7 | Waxing Crescent | 2% | 6:15 AM | 10:24 PM |
| 8 | Waxing Crescent | 7% | 7:09 AM | 11:37 PM |
| 9 | Waxing Crescent | 14% | 8:11 AM | — |
| 10 | Waxing Crescent | 23% | 9:28 AM | 12:25 AM |
| 11 | Waxing Crescent | 34% | 10:26 AM | 1:31 AM |
| 12 | First Quarter | 45% | 11:47 AM | 2:00 AM |
| 13 | First Quarter | 57% | 1:16 PM | 2:25 AM |
| 14 | Waxing Gibbous | 68% | 2:21 PM | 3:07 AM |
| 15 | Waxing Gibbous | 78% | 3:35 PM | 3:33 AM |
| 16 | Waxing Gibbous | 87% | 4:27 PM | 3:51 AM |
| 17 | Waxing Gibbous | 93% | 5:40 PM | 4:21 AM |
| 18 | Waxing Gibbous | 97% | 6:35 PM | 4:45 AM |
| 19 | Full Moon | 100% | 7:48 PM | 5:33 AM |
| 20 | Full Moon | 100% | 8:44 PM | 6:11 AM |
| 21 | Waning Gibbous | 98% | 9:46 PM | 6:44 AM |
| 22 | Waning Gibbous | 94% | 10:28 PM | 7:41 AM |
| 23 | Waning Gibbous | 89% | 11:31 PM | 8:29 AM |
| 24 | Waning Gibbous | 82% | 11:54 PM | 9:37 AM |
| 25 | Waning Gibbous | 75% | — | 10:27 AM |
| 26 | Waning Gibbous | 66% | 12:25 AM | 11:36 AM |
| 27 | Last Quarter | 57% | 12:45 AM | 12:26 PM |
| 28 | Last Quarter | 47% | 1:30 AM | 1:35 PM |
| 29 | Waning Crescent | 37% | 1:40 AM | 2:25 PM |
| 30 | Waning Crescent | 28% | 2:10 AM | 3:35 PM |
| 31 | Waning Crescent | 19% | 2:26 AM | 4:29 PM |
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Frequently asked questions
When is the full moon in May 2027 in San Mateo, California, United States?
The full moon peaks on Thursday, May 20, 2027, 2:47 AM (local time).
When is the new moon in May 2027?
The new moon falls on Thursday, May 6, 2027, 5:45 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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