SkyAlmanac

Moon · August 2026

Moon calendar for Helena, Montana, United States: August 2026

Daily moon phases, illumination, moonrise and moonset in Helena, Montana, United States for August 2026. Full moon: August 28, 2026. All times are shown in the local time of Helena, Montana, United States.

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Full moonFriday, August 28, 2026, 1:00 AM
New moonWednesday, August 12, 2026, 9:40 AM
Day Phase Illumination Moonrise Moonset
1 Waning Gibbous 91% 9:52 PM 9:42 AM
2 Waning Gibbous 83% 10:16 PM 10:58 AM
3 Waning Gibbous 74% 10:25 PM 12:17 PM
4 Waning Gibbous 64% 10:41 PM 1:37 PM
5 Last Quarter 53% 11:26 PM 2:53 PM
6 Last Quarter 41% 11:48 PM 4:21 PM
7 Waning Crescent 30% — 5:40 PM
8 Waning Crescent 20% 12:27 AM 6:50 PM
9 Waning Crescent 11% 1:40 AM 7:46 PM
10 Waning Crescent 5% 2:56 AM 8:25 PM
11 Waning Crescent 1% 4:20 AM 8:55 PM
12 New Moon 0% 5:45 AM 9:31 PM
13 Waxing Crescent 2% 7:23 AM 9:38 PM
14 Waxing Crescent 6% 8:24 AM 9:52 PM
15 Waxing Crescent 12% 9:40 AM 10:16 PM
16 Waxing Crescent 19% 10:45 AM 10:24 PM
17 Waxing Crescent 28% 12:08 PM 10:34 PM
18 Waxing Crescent 37% 1:23 PM 11:25 PM
19 First Quarter 47% 2:20 PM 11:41 PM
20 First Quarter 56% 3:32 PM —
21 Waxing Gibbous 65% 4:21 PM 12:19 AM
22 Waxing Gibbous 74% 5:24 PM 1:10 AM
23 Waxing Gibbous 82% 5:57 PM 1:56 AM
24 Waxing Gibbous 88% 6:25 PM 2:57 AM
25 Waxing Gibbous 94% 6:59 PM 4:06 AM
26 Waxing Gibbous 98% 7:32 PM 5:23 AM
27 Full Moon 100% 7:40 PM 6:21 AM
28 Full Moon 100% 8:00 PM 7:35 AM
29 Waning Gibbous 98% 8:20 PM 8:31 AM
30 Waning Gibbous 93% 8:26 PM 9:53 AM
31 Waning Gibbous 86% 8:46 PM 11:25 AM

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Frequently asked questions

When is the full moon in August 2026 in Helena, Montana, United States?

The full moon peaks on Friday, August 28, 2026, 1:00 AM (local time).

When is the new moon in August 2026?

The new moon falls on Wednesday, August 12, 2026, 9:40 AM (local time) — the darkest nights of the month, best for stargazing.

Data: Meeus astronomical algorithms. How we calculate this

More for Helena, Montana, United States

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