Imperial Beach weather in December

In December, Imperial Beach sees average daytime highs of 61°F and overnight lows near 52°F, with 2.0 in of rain across 5.7 wet days and about 9.9 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 61°F through the month. The sky is clear or mostly clear about 53% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 hours at the start of December to 9 h 54 min by month's end. Set against the rest of the year, December is Imperial Beach's 9th-clearest and 6th-windiest month. For the whole year in context, see Imperial Beach's year-round climate.

Daytime high: 61°; 9th warmest
Overnight low: 52°; 3rd coldest
Rainfall: 2.0 in; 5.7 wet days
Daylight: 9 h 54 min; 6:49 AM – 4:41 PM
Cloud cover: 41%; 9th clearest
Wind: 6 mph; 6th windiest
Solar energy: 3.16 kWh/m²
Travel score: 6.0; out of 10

Imperial Beach is city in San Diego County, California, United States.

Density: 2,360/km²; people per km²
Founded: 1887

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← November Imperial Beach year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 61°F through the month.

A typical December day in Imperial Beach reaches about 61°F in the afternoon and slips back to 52°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 56°F and 67°F. Set against its neighbours, December runs about 4°F cooler than November and on par with January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	63	63	63	63	62	62	62	62	62	62	62	62	61	61	61	61	61	61	61	61	61	61	61	61	61	61	61	61	61	61	61
Avg low (°F)	54	54	54	53	53	53	53	53	53	53	53	53	52	52	52	52	52	52	52	52	51	51	51	51	51	51	51	51	51	51	51

	Avg high (°F)	Avg low (°F)
1	63	54
2	63	54
3	63	54
4	63	53
5	62	53
6	62	53
7	62	53
8	62	53
9	62	53
10	62	53
11	62	53
12	62	53
13	61	52
14	61	52
15	61	52
16	61	52
17	61	52
18	61	52
19	61	52
20	61	52
21	61	51
22	61	51
23	61	51
24	61	51
25	61	51
26	61	51
27	61	51
28	61	51
29	61	51
30	61	51
31	61	51

Imperial Beach weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Daylight (hours)	Travel score
Jan	61° / 52°	2.5	6.1	10.1	5.8
Feb	61° / 52°	3.1	7	10.8	5.4
Mar	61° / 53°	2.1	5.9	11.8	5.8
Apr	63° / 55°	1.0	4.2	12.8	6.7
May	65° / 58°	0.4	2.1	13.6	7.5
Jun	68° / 60°	0.1	0.4	14.1	8.3
Jul	72° / 65°	0.1	0.4	13.9	8.8
Aug	74° / 66°	0.0	0.3	13.2	9.2
Sep	73° / 65°	0.2	0.8	12.2	9.0
Oct	70° / 62°	0.6	2.4	11.2	8.3
Nov	66° / 56°	1.0	3.6	10.3	7.4
Dec	61° / 52°	2.0	5.7	9.9	6.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 34%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	67	67	66	66	66	65	65	65	66	66	66	66	66	66	66	66	66	66	66	66	66	66	66	65	66	66	66	65	65	66	65
Cloudier (%)	33	33	34	34	34	35	35	35	34	34	34	34	34	34	34	34	34	34	34	34	34	34	34	35	34	34	34	35	35	34	35

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	66	34
4	66	34
5	66	34
6	65	35
7	65	35
8	65	35
9	66	34
10	66	34
11	66	34
12	66	34
13	66	34
14	66	34
15	66	34
16	66	34
17	66	34
18	66	34
19	66	34
20	66	34
21	66	34
22	66	34
23	66	34
24	65	35
25	66	34
26	66	34
27	66	34
28	65	35
29	65	35
30	66	34
31	65	35

Chance of precipitation in December

Any precipitation

Imperial Beach gets around 2.0 in of rain over 5.7 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 20% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	17	17	18	18	18	18	18	19	19	19	19	20	20	20	20	20	20	20	20	19	19	19	19	19	19	19	19	19	19	19	20

	Rain chance (%)
1	17
2	17
3	18
4	18
5	18
6	18
7	18
8	19
9	19
10	19
11	19
12	20
13	20
14	20
15	20
16	20
17	20
18	20
19	20
20	19
21	19
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	19
30	19
31	20

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	94	94	94	94	94	94	94	94	95	95	95	96	96	97	97	98	98	98	99	99	99	99	99	99	99	99	99	99	99	99	99
Comfortable (%)	6	6	6	6	6	6	6	6	5	5	5	4	4	3	3	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	95	5
10	95	5
11	95	5
12	96	4
13	96	4
14	97	3
15	97	3
16	98	2
17	98	2
18	98	2
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

Wind in December

Winds average 6 mph in December.

Across December, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm
31	6	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 hours at the start of December to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:38 AM to 6:55 AM, and sunset from 4:39 PM to 4:48 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.0	10.0	10.0	10.0	10.0	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9
Sunrise (AM)	6:38	6:39	6:39	6:40	6:41	6:42	6:43	6:43	6:44	6:45	6:45	6:46	6:47	6:47	6:48	6:49	6:49	6:50	6:50	6:51	6:51	6:52	6:52	6:53	6:53	6:53	6:54	6:54	6:55	6:55	6:55
Sunset (PM)	4:39	4:39	4:39	4:39	4:39	4:39	4:39	4:39	4:39	4:39	4:39	4:40	4:40	4:40	4:40	4:41	4:41	4:41	4:42	4:42	4:43	4:43	4:44	4:44	4:45	4:45	4:46	4:46	4:47	4:48	4:48

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.0	6:38	4:39
2	10.0	6:39	4:39
3	10.0	6:39	4:39
4	10.0	6:40	4:39
5	10.0	6:41	4:39
6	9.9	6:42	4:39
7	9.9	6:43	4:39
8	9.9	6:43	4:39
9	9.9	6:44	4:39
10	9.9	6:45	4:39
11	9.9	6:45	4:39
12	9.9	6:46	4:40
13	9.9	6:47	4:40
14	9.9	6:47	4:40
15	9.9	6:48	4:40
16	9.9	6:49	4:41
17	9.9	6:49	4:41
18	9.9	6:50	4:41
19	9.9	6:50	4:42
20	9.9	6:51	4:42
21	9.9	6:51	4:43
22	9.9	6:52	4:43
23	9.9	6:52	4:44
24	9.9	6:53	4:44
25	9.9	6:53	4:45
26	9.9	6:53	4:45
27	9.9	6:54	4:46
28	9.9	6:54	4:46
29	9.9	6:55	4:47
30	9.9	6:55	4:48
31	9.9	6:55	4:48

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.16 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.16 kWh/m² to a high of 7.97 kWh/m² in June across the year — December's 3.16 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.3	3.3	3.2	3.2	3.2	3.2	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.2	3.2	3.2	3.2	3.2	3.2
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.3	Moderate
2	3.3	Moderate
3	3.2	Moderate
4	3.2	Moderate
5	3.2	Moderate
6	3.2	Moderate
7	3.1	Moderate
8	3.1	Moderate
9	3.1	Moderate
10	3.1	Moderate
11	3.1	Moderate
12	3.1	Moderate
13	3.1	Moderate
14	3.1	Moderate
15	3.1	Moderate
16	3.1	Moderate
17	3.1	Moderate
18	3.1	Moderate
19	3.1	Moderate
20	3.1	Moderate
21	3.1	Moderate
22	3.1	Moderate
23	3.1	Moderate
24	3.1	Moderate
25	3.1	Moderate
26	3.2	Moderate
27	3.2	Moderate
28	3.2	Moderate
29	3.2	Moderate
30	3.2	Moderate
31	3.2	Moderate

Planning a trip in December

Is December a good time to visit Imperial Beach?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.0

Sightseeing

9th-best month of the year

1.0

Beach & pool

9th-best month of the year

December is a reasonable time to visit Imperial Beach for sightseeing.

What to pack for Imperial Beach in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Imperial Beach sees daytime highs around 61°F and nights near 52°F. Worth packing: a warm layer. About 6 days see rain.

a warm layer

Sea temperature near Imperial Beach in December

The nearest coast averages about 61°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 70°F and coldest in February near 59°F.

It's comfortable for a long swim from Jul 13 to Sep 28 — about 2.6 months when the water holds above 68°F.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°F)	60	59	60	61	63	65	68	70	69	67	64	61
Comfort	Cool	Cool	Cool	Cool	Cool	Cool	Refreshing	Refreshing	Refreshing	Cool	Cool	Cool

	Sea temperature (°F)	Comfort
Jan	60	Cool
Feb	59	Cool
Mar	60	Cool
Apr	61	Cool
May	63	Cool
Jun	65	Cool
Jul	68	Refreshing
Aug	70	Refreshing
Sep	69	Refreshing
Oct	67	Cool
Nov	64	Cool
Dec	61	Cool

UV index in Imperial Beach in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Imperial Beach peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	4	5	5	8	8	11	11	10	8	6	4	3
Level	Moderate	Moderate	High	Very high	Very high	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	4	Moderate
Feb	5	Moderate
Mar	5	High
Apr	8	Very high
May	8	Very high
Jun	11	Extreme
Jul	11	Extreme
Aug	10	Extreme
Sep	8	Very high
Oct	6	High
Nov	4	Moderate
Dec	3	Moderate

Air quality in Imperial Beach in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Imperial Beach is worst in October — around 33 µg/m³ PM2.5 (moderate), about 5.4× the cleanest month (May, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	11	11	10	9	6	9	8	9	16	33	13	17
Level	Good	Good	Good	Good	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	11	Good
Feb	11	Good
Mar	10	Good
Apr	9	Good
May	6	Good
Jun	9	Good
Jul	8	Good
Aug	9	Good
Sep	16	Moderate
Oct	33	Moderate
Nov	13	Moderate
Dec	17	Moderate

Location & terrain

Where is Imperial Beach?

Imperial Beach sits at 32.6°N, 117.1°W, 20 ft above sea level, in United States. The nearest listed city is Chula Vista, 4.3 mi away.

Topography around Imperial Beach

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Imperial Beach.

Within 2 miles, the terrain around Imperial Beach has only modest variations in elevation — a maximum elevation change of 105 ft around an average of 16 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,152 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,450 ft.

The land around Imperial Beach is covered by artificial surfaces (36%) and water (35%) within 2 miles, water (43%) and artificial surfaces (35%) within 10 miles, and water (35%) and shrubs (24%) within 50 miles.

2 miles

105 ft

artificial surfaces 36%

10 miles

1,152 ft

water 43%

50 miles

6,450 ft

water 35%

treesshrubsgrasslandartificial surfacesbare terrainwaterwetland

← November Imperial Beach year-round climate January →Best places to visit in December

December weather nearby: Chula Vista 4.3 mi · National City 6.8 mi · Coronado 8.1 mi · Tijuana 8.7 mi · San Diego 9.3 mi · Pórticos de San Antonio 11 mi · La Presa 11 mi · La Joya 12 mi

United States travel facts

Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 100% of US; price level, 2025
GDP per capita: $90,027; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 5.8; per 100k, 2023
Road deaths: 12.7; per 100k/yr, 2019
Income group: High; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Imperial Beach (32.5839°, -117.1131°, elevation 20 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	63	54
2	63	54
3	63	54
4	63	53
5	62	53
6	62	53
7	62	53
8	62	53
9	62	53
10	62	53
11	62	53
12	62	53
13	61	52
14	61	52
15	61	52
16	61	52
17	61	52
18	61	52
19	61	52
20	61	52
21	61	51
22	61	51
23	61	51
24	61	51
25	61	51
26	61	51
27	61	51
28	61	51
29	61	51
30	61	51
31	61	51

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	66	34
4	66	34
5	66	34
6	65	35
7	65	35
8	65	35
9	66	34
10	66	34
11	66	34
12	66	34
13	66	34
14	66	34
15	66	34
16	66	34
17	66	34
18	66	34
19	66	34
20	66	34
21	66	34
22	66	34
23	66	34
24	65	35
25	66	34
26	66	34
27	66	34
28	65	35
29	65	35
30	66	34
31	65	35

	Rain chance (%)
1	17
2	17
3	18
4	18
5	18
6	18
7	18
8	19
9	19
10	19
11	19
12	20
13	20
14	20
15	20
16	20
17	20
18	20
19	20
20	19
21	19
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	19
30	19
31	20

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	95	5
10	95	5
11	95	5
12	96	4
13	96	4
14	97	3
15	97	3
16	98	2
17	98	2
18	98	2
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°F)	Avg low (°F)
1	63	54
2	63	54
3	63	54
4	63	53
5	62	53
6	62	53
7	62	53
8	62	53
9	62	53
10	62	53
11	62	53
12	62	53
13	61	52
14	61	52
15	61	52
16	61	52
17	61	52
18	61	52
19	61	52
20	61	52
21	61	51
22	61	51
23	61	51
24	61	51
25	61	51
26	61	51
27	61	51
28	61	51
29	61	51
30	61	51
31	61	51

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	66	34
4	66	34
5	66	34
6	65	35
7	65	35
8	65	35
9	66	34
10	66	34
11	66	34
12	66	34
13	66	34
14	66	34
15	66	34
16	66	34
17	66	34
18	66	34
19	66	34
20	66	34
21	66	34
22	66	34
23	66	34
24	65	35
25	66	34
26	66	34
27	66	34
28	65	35
29	65	35
30	66	34
31	65	35

	Rain chance (%)
1	17
2	17
3	18
4	18
5	18
6	18
7	18
8	19
9	19
10	19
11	19
12	20
13	20
14	20
15	20
16	20
17	20
18	20
19	20
20	19
21	19
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	19
30	19
31	20

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	95	5
10	95	5
11	95	5
12	96	4
13	96	4
14	97	3
15	97	3
16	98	2
17	98	2
18	98	2
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°F)	Avg low (°F)
1	63	54
2	63	54
3	63	54
4	63	53
5	62	53
6	62	53
7	62	53
8	62	53
9	62	53
10	62	53
11	62	53
12	62	53
13	61	52
14	61	52
15	61	52
16	61	52
17	61	52
18	61	52
19	61	52
20	61	52
21	61	51
22	61	51
23	61	51
24	61	51
25	61	51
26	61	51
27	61	51
28	61	51
29	61	51
30	61	51
31	61	51

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	66	34
4	66	34
5	66	34
6	65	35
7	65	35
8	65	35
9	66	34
10	66	34
11	66	34
12	66	34
13	66	34
14	66	34
15	66	34
16	66	34
17	66	34
18	66	34
19	66	34
20	66	34
21	66	34
22	66	34
23	66	34
24	65	35
25	66	34
26	66	34
27	66	34
28	65	35
29	65	35
30	66	34
31	65	35

	Rain chance (%)
1	17
2	17
3	18
4	18
5	18
6	18
7	18
8	19
9	19
10	19
11	19
12	20
13	20
14	20
15	20
16	20
17	20
18	20
19	20
20	19
21	19
22	19
23	19
24	19
25	19
26	19
27	19
28	19
29	19
30	19
31	20

	Dry (%)	Comfortable (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	94	6
6	94	6
7	94	6
8	94	6
9	95	5
10	95	5
11	95	5
12	96	4
13	96	4
14	97	3
15	97	3
16	98	2
17	98	2
18	98	2
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1