Gaga'ifomauga · SamoaSummit weather, forecast and climate

Silisili

1,858 mUltra-prominent peak

Elevation1,858 mabove sea level

Prominence1,858 mindependent height

Isolation–to a higher summit

Summit, Jul18°average high

13.62° S, 172.49° WElevation 1,858 mUTC+13 · Samoa Standard Time

From the valley to the top

Summit1,858 m
Mid-mountain1,040 m
Valley · Aopo231 m

Freezing level in October: above the summit

iThe mountain

Silisili in brief

Silisili rises to 1,858 m, Gaga'ifomauga, Samoa. Its topographic prominence — the height it stands above the lowest contour enclosing a higher summit — is 1,858 m, which makes it an ultra-prominent peak.

At the summit, March is the mildest month with average highs of 19°, while nights rarely fall below freezing.

The nearest town in the atlas is Aopo, 9.5 km to the N at 231 m.

Facts

Elevation: 1,858 m · 6,096 ft
Prominence: 1,858 m
Region: Gaga'ifomauga
Country: Samoa
Coordinates: -13.6183, -172.4858
Nearest airport: Faleolo International Airport (APW) · 57 km

iiForecast

Weather at three heights

Temperatures are adjusted to each height; summits are usually colder and windier than the valley forecast suggests.

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iiiSummit climate

The top of Silisili by month

Summit temperatures and precipitation

Climate normals for the summit area (~1 km grid), station-adjusted

Climate normals for Silisili by month
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average high	19°	19°	19°	19°	18°	18°	18°	17°	18°	18°	18°	19°
Average low	16°	16°	16°	16°	16°	16°	15°	15°	15°	15°	16°	16°
Precipitation	754 mm	690 mm	542 mm	345 mm	276 mm	161 mm	151 mm	125 mm	190 mm	294 mm	400 mm	559 mm
Cloud cover	69%	67%	62%	51%	43%	35%	30%	28%	32%	43%	55%	62%
Daylight	12h 50	12h 32	12h 11	11h 48	11h 29	11h 20	11h 24	11h 39	12h 01	12h 24	12h 45	12h 55
Month score	51	52	54	58	62	64	64	64	65	62	57	54

Snow and freezing level

Average height of the 0 °C level from the summit normals (6.5 °C per km); snow months have a summit mean at or below +1 °C

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Freezing level	4,500 m	4,550 m	4,550 m	4,550 m	4,500 m	4,450 m	4,350 m	4,350 m	4,400 m	4,450 m	4,450 m	4,500 m
Summit	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C	above 0 °C