Weather in San Juan de Marcona

14-day forecast · updated today, Wednesday, October 28, at 10:17 pm (GMT-5)

Now · clear 71 °F

Feels like: 71 °F
Low / high: 69 / 72 °F
Rain: 0%
Wind: 12 mph ESE

→ 30.01 inHg · steady UV 8 · very high

Today in San Juan de Marcona: partly cloudy, 69 °F to 72 °F, with a 0% chance of rain and a gentle breeze from the east-southeast (12 mph). Tomorrow, overcast, 70 °F to 73 °F and a 0% chance of rain. The warmest day of the week is Friday 30, at 73 °F. No significant rain expected over the next 7 days.

Temperatures for the next 14 days

72° 69°
Today
73° 70°
Thu 29
73° 70°
Fri 30
73° 70°
Sat 31
73° 69°
Sun 1
73° 70°
Mon 2
71° 70°
Tue 3
71° 70°
Wed 4
73° 69°
Thu 5
73° 69°
Fri 6
73° 67°
Sat 7
73° 68°
Sun 8
71° 68°
Mon 9
71° 69°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 28	Partly cloudy	69 / 72 °F	0%	15 mph SE	5.3 ft	8:21 am · 9:07 pm	ECMWF
Thu 29	Overcast	70 / 73 °F	0%	16 mph SE	5.4 ft	9:16 am · 10:00 pm	ECMWF
Fri 30	Partly cloudy	70 / 73 °F	2%	17 mph SE	6.1 ft	10:20 am · 11:00 pm	ECMWF
Sat 31	Overcast	70 / 73 °F	2%	18 mph SE	6.6 ft	11:39 am	ECMWF
Sun 1	Overcast	69 / 73 °F	0%	18 mph SE	6.8 ft	12:05 am · 1:08 pm	ECMWF
Mon 2	Light drizzle	70 / 73 °F	0% · 0.01 in	17 mph SSE	6.3 ft	1:12 am · 2:30 pm	ECMWF
Tue 3	Light drizzle	70 / 71 °F	4% · 0.02 in	20 mph SE	7.2 ft	2:17 am · 3:34 pm	ECMWF
Wed 4	Overcast	70 / 71 °F	8%	18 mph SE	7.2 ft	3:15 am · 4:26 pm	ECMWF
Thu 5	Overcast	69 / 73 °F	2%	19 mph SE	6.9 ft	4:06 am · 5:10 pm	ECMWF
Fri 6	Overcast	69 / 73 °F	0%	22 mph SE	7.4 ft	4:51 am · 5:51 pm	ECMWF
Sat 7	Overcast	67 / 73 °F	2%	20 mph ESE	5.6 ft	5:34 am · 6:29 pm	ECMWF
Sun 8	Overcast	68 / 73 °F	2%	20 mph SE	5.8 ft	6:14 am · 7:06 pm	ECMWF
Mon 9	Overcast	68 / 71 °F	2%	17 mph SE	5.4 ft	6:53 am · 7:44 pm	ECMWF
Tue 10	Overcast	69 / 71 °F	2%	17 mph SE	5.4 ft	7:33 am · 8:21 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Clear	Clear sky	Clear sky	Clear sky	Mainly clear	Mainly clear	Mainly clear
Temperature	69°	69°	69°	71°	72°	72°	71°	71°
Chance of rain	0%	0%	0%	0%	0%	0%	0%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	9 ESE	8 SE	7 ESE	10 SSE	12 S	14 SSE	14 SE	13 SE
Humidity	80%	82%	80%	80%	81%	81%	81%	81%
UV	0	0	0	6	8	3	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on temperature today: take it with some caution.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	72°	73°	73°	73°	73°	73°	71°
AIFS	74°	75°	75°	75°	75°	75°	74°
GFS	74°	75°	75°	74°	74°	73°	73°
ICON	80°	82°	82°	81°	81°	82°	80°
Confidence	medium	medium	medium	medium	medium	medium	medium

Do the models agree? · Rain
Rain	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	0	0	0	0	0	0.01 in	0.02 in
AIFS	0	0	0	0.02 in	0.02 in	0.02 in	0.02 in
GFS	0	0	0	0	0	0	0
ICON	0	0	0	0	0	0	0
Confidence	high	high	high	high	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	1519	1621	1722	1824	1823	1722	2027
AIFS	12	13	13	15	13	15	16
GFS	1820	1921	1720	1921	1922	1820	2123
ICON	1220	1525	1526	1727	1524	1525	1931
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF (51 scenarios)	0%	0%	2%	2%	0%	0%	4%
GFS (GEFS, 31 scenarios)	3%	0%	0%	0%	0%	0%	0%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: much warmer and much wetter.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Well above +6.3 °F	Well above +100%	—
Nov 9 – Nov 15Nov 9–Nov 15	Well above +7.6 °F	Normal	80° / 67°
Nov 16 – Nov 22Nov 16–Nov 22	Well above +7.7 °F	Well above +100%	80° / 68°
Nov 23 – Nov 29Nov 23–Nov 29	Well above +7.6 °F	Well above +100%	80° / 69°
Nov 30 – Dec 6Nov 30–Dec 6	Well above +7.4 °F	Well above +100%	81° / 69°

Coming months

When	TemperatureTemp.	Rain
November	Well above +7.2 °F	Normal
December	Well above +6.5 °F	Normal
January	Well above +5.6 °F	Well above +316%
February	Above +5.2 °F	Well above +310%
March	Well above +5.6 °F	Well above +271%

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

San Juan de Marcona climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit San Juan de Marcona is from October to March: highs of 70 °F to 83 °F, barely 1 rainy day a month and 6 hours of sunshine a day.

81° 66°

JanJ
83° 67°

FebF
82° 65°

MarM
78° 63°

AprA
73° 59°

MayM
69° 56°

JunJ
67° 55°

JulJ
66° 55°

AugA
68° 56°

SepS
70° 57°

OctO
73° 60°

NovN
77° 63°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	81°	66°	0.02 in	2	6.4	69°	4.9 ft
FebruaryFeb	83°	67°	0.00 in	1	6.6	70°	5.4 ft
MarchMar	82°	65°	0.00 in	1	6.6	68°	5.8 ft
AprilApr	78°	63°	0.00 in	0	6.2	66°	6.1 ft
MayMay	73°	59°	0.00 in	0	5.9	64°	6.4 ft
JuneJun	69°	56°	0.00 in	0	4.3	63°	6.9 ft
JulyJul	67°	55°	0.00 in	1	3.8	61°	6.9 ft
AugustAug	66°	55°	0.00 in	0	4.2	60°	6.8 ft
SeptemberSep	68°	56°	0.00 in	1	4.4	60°	6.5 ft
OctoberOct	70°	57°	0.00 in	0	5.2	61°	6.1 ft
NovemberNov	73°	60°	0.00 in	1	6.5	63°	5.8 ft
DecemberDec	77°	63°	0.00 in	1	6.9	66°	5.1 ft

Month	Water	Waves
Jan	69°	4.9 ft
Feb	70°	5.4 ft
Mar	68°	5.8 ft
Apr	66°	6.1 ft
May	64°	6.4 ft
Jun	63°	6.9 ft
Jul	61°	6.9 ft
Aug	60°	6.8 ft
Sep	60°	6.5 ft
Oct	61°	6.1 ft
Nov	63°	5.8 ft
Dec	66°	5.1 ft

Days: rainy days in the month. Sun: hours a day.

A normal year brings 0.06 in of rain on about 8 days and about 2,050 hours of sunshine.

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now71 °Ffeels like 71 °F

Tomorrow70 / 73 °F

It's 71 °F now (feels like 71 °F). Today, 69 °F to 72 °F; tomorrow, 70 °F to 73 °F.

Chance of rain

Today 0%
Thu 29 0%
Fri 30 2%
Sat 31 2%
Sun 1 0%
Mon 2 0% 0.01 in
Tue 3 4% 0.02 in

Today the chance of rain reaches 0%. No significant rain expected this week.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.00 in; last 7 days, 0.02 in.

Humidity and dew point

Humidity81%

Dew point64 °F

Humidity is 81% now and the dew point is 64 °F.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds14%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now0

Today's peak8very high

Thu 29: 11 · Fri 30: 9 · Sat 31: 7

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.8029.9030.00 29.83

Steady now (+0.01 inHg in 3 hours). Over the next 48 hours: −0.07 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 31

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Tue 27	Overcast	68 / 71 °F	0	17 mph SE
Mon 26	Overcast	68 / 71 °F	0	16 mph SE
Sun 25	Overcast	69 / 71 °F	0	17 mph SE
Sat 24	Light drizzle	69 / 72 °F	0.01 in	21 mph SE
Fri 23	Light drizzle	70 / 73 °F	0.01 in	19 mph SE
Thu 22	Overcast	69 / 73 °F	0	18 mph SE
Wed 21	Overcast	69 / 72 °F	0	18 mph SE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Light drizzle	69 / 71 °F	0.02 in	14 mph SSE
Mon 19	Light drizzle	65 / 69 °F	0.02 in	9 mph S
Sun 18	Partly cloudy	67 / 69 °F	0	12 mph SSE
Sat 17	Overcast	67 / 71 °F	0	19 mph SE
Fri 16	Partly cloudy	67 / 72 °F	0	21 mph SE
Thu 15	Partly cloudy	67 / 73 °F	0	20 mph SE
Wed 14	Partly cloudy	66 / 72 °F	0	17 mph SE
Tue 13	Overcast	66 / 70 °F	0	17 mph SE
Mon 12	Overcast	66 / 69 °F	0	16 mph SE
Sun 11	Overcast	67 / 70 °F	0	16 mph SE
Sat 10	Mainly clear	67 / 70 °F	0	15 mph SE
Fri 9	Partly cloudy	66 / 70 °F	0	18 mph SE
Thu 8	Overcast	66 / 69 °F	0	17 mph SE
Wed 7	Overcast	66 / 69 °F	0	15 mph SE
Tue 6	Partly cloudy	66 / 70 °F	0	17 mph SE
Mon 5	Partly cloudy	66 / 69 °F	0	15 mph SE
Sun 4	Partly cloudy	65 / 69 °F	0	14 mph SE
Sat 3	Partly cloudy	63 / 68 °F	0	13 mph SSE
Fri 2	Overcast	63 / 66 °F	0	12 mph SSE
Thu 1	Overcast	64 / 67 °F	0	17 mph SE
Wed 30	Overcast	65 / 68 °F	0	20 mph SE
Tue 29	Light drizzle	65 / 68 °F	0.02 in	16 mph SE
Mon 28	Overcast	65 / 67 °F	0	16 mph SE

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in San Juan de MarconaQuestions

What's the weather like today in San Juan de Marcona?

Partly cloudy, from 69 °F to 72 °F, with a gentle breeze from the east-southeast (12 mph) and a 0% chance of rain.

Will it rain tomorrow in San Juan de Marcona?

On Thursday 29 the chance of rain is 0% (0.00 in): overcast.

How warm will it be this week?

Between a low of 69 °F and a high of 73 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 8 (very high). Avoid the midday sun; reflection off the water adds to it.

Is the pressure rising or falling?

It's 30.01 inHg and steady: −0.01 inHg over the last 24 hours.

When is the best time to visit San Juan de Marcona?

The best time to visit San Juan de Marcona is from October to March: highs of 70 °F to 83 °F, barely 1 rainy day a month and 6 hours of sunshine a day.

What is the weather like in San Juan de Marcona in October?

In October, San Juan de Marcona normally sees highs of 70 °F and lows of 57 °F, with about 0 rainy days (0.00 in for the month) and 5 hours of sunshine a day. The sea is around 61 °F. These are 1991–2020 averages.

What are the warmest and wettest months in San Juan de Marcona?

The warmest is February, with average highs of 83 °F, and the coldest August, with lows of 55 °F. The wettest is January (0.02 in) and the driest, February.

More about San Juan de Marcona today

Weather near San Juan de Marcona

Paracas 73 °F · partly cloudy · 127 mi

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 9.9 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 10:17 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from