Nostalgia: Then & Now · Arthur Dunn · 19 August 2026

Moon phase today: What the Moon will look like Aug. 19

Moon phase today: What the Moon will look like Aug. 19

On Wednesday, August 19, 2026, the Moon is in a Waxing Crescent phase with 42 percent of its surface visible. The moon phase today what skywatchers will notice is a growing sliver of light on the right in the Northern Hemisphere, and on the left in the Southern Hemisphere, as the next Full Moon approaches on August 28. People have long read the night by that changing shape, and NASA now puts a precise percentage on it, which is why this skywatch still belongs in Nostalgia: Then & Now.

Key Takeaways

The Moon is getting brighter with each passing night. Its illuminated side is gradually growing through the Waxing Crescent phase. At 42 percent visible, tonight's crescent is a substantial slice of the disk, still short of a half-Moon, and still climbing toward fullness.

What is today's Moon phase?

As of Wednesday, Aug. 19, NASA's Daily Moon Guide tracker says the Moon phase is Waxing Crescent, with 42% of its surface visible. Waxing means the bright portion is increasing from night to night.

In the Northern Hemisphere, that light appears on the right side. In the Southern Hemisphere, it appears on the left. If you learned the Moon from a backyard glance, that right-hand glow is the same cue families used long before phones existed.

The modern difference is the number. Forty-two percent is a measured snapshot, not an estimate from memory. You are past New Moon, when the face we see is dark, and not yet at First Quarter, when half of the Moon is lit on the right side and it looks like a half-Moon.

That placement is why tonight matters. A Waxing Crescent at 42 percent is the middle of the climb, not the start of a fade. Look up and you are watching the Moon add light on its way to the next Full Moon on August 28.

What can you see on the Moon tonight?

You do not need special gear to make August 19 worth a look. Without any visual aids, tonight you can see the Mares Crisium, Tranquillitatis, and Fecunditatis. Those dark lunar seas are the unaided view people have used for generations: broad gray patches on a familiar disk.

Binoculars add the next layer. You will also be able to see the Endymion Crater, Posidonus Crater, and the Mare Nectaris. Those targets turn a familiar crescent into terrain instead of a simple outline.

A telescope pushes the same night into a more recent chapter. It will help you spot the Apollo 17 and Apollo 16 landing spots, as well as the Rupes Altai. The Moon in the sky is unchanged. What has changed is that some of its landmarks are places humans reached, not only features on a chart.

That then-and-now view runs from seas to craters to landing spots. Each step uses more glass, but all of it is available on the same Waxing Crescent night.

When is the next Full Moon?

The next Full Moon will take place on August 28. That is the date when the whole face of the Moon is illuminated and fully visible.

From August 19, that Full Moon is nine days away. The Moon is already showing 42 percent of its surface, so you are watching a disk that is already well lit and still waxing.

Two named stages still sit between tonight and that full face. First Quarter is when half of the Moon is lit on the right side and it looks like a half-Moon. Waxing Gibbous is when more than half is lit up, but it is not quite full yet.

Until August 28, the pattern described for this week holds: the Moon is getting brighter with each passing night, and the illuminated side is gradually growing. If you want the classic full disk, mark the 28th.

What are Moon phases?

The Moon goes through a series of phases that cause its appearance to change as seen from Earth. As the Moon orbits Earth, it goes through a lunar cycle that takes about 29.5 days to complete, according to NASA.

The positions of the Sun, Earth, and Moon determine how much of the Moon's illuminated side is visible from Earth. Throughout the cycle, the Moon changes from a thin crescent to a half Moon, then a Full Moon, before repeating the cycle once more.

There are eight phases. New Moon is the dark start: the Moon is between Earth and the Sun, so the side we see is dark. In other words, it is invisible to the eye.

Waxing Crescent is the phase in the sky on August 19. A small sliver of light appears on the right side in the Northern Hemisphere. Tonight that growing light already covers 42 percent of the surface, so the crescent is thick rather than faint.

First Quarter comes next. Half of the Moon is lit on the right side, and it looks like a half-Moon. Waxing Gibbous follows, with more than half lit up, but not quite full yet. That is the bridge to the Full Moon due on August 28, when the whole face is illuminated and fully visible.

After fullness, Waning Gibbous is when the Moon starts losing light on the right side in the Northern Hemisphere. Third Quarter, also called Last Quarter, is another half-Moon, but now the left side is lit. Waning Crescent leaves a thin sliver of light on the left side before going dark again at the next New Moon.

That 29.5-day loop is why a Wednesday crescent still feels familiar in a then-and-now sense. The shape in the sky has not been rebranded. Only the toolkit has changed, from a glance at the horizon to a NASA percentage and, if you have the glass, craters and Apollo landing spots on the same seas.

If you step outside on August 19, you are looking at a Waxing Crescent with 42 percent of its surface visible. The light is growing on the right in the north and on the left in the south. The next Full Moon is August 28. Look up first, then check the tracker if you want the number behind what you already saw.

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