Following on from the inclusion of the Day cycles in Gold & Silver, Black & White takes this a step further and includes a seasonal cycle within the games.

The Cycle

Unlike the day/night cycle however, the seasonal cycle is not completely based upon and dependant on the real world seasonal cycle. Instead, each season lasts a month. This cycle allows for all four seasons to be done within four months, following which, the cycle gets repeated. This means that you will have 3 opportunities to access each season in each year.

Spring
Jan, May, Sept
Summer
Feb, Jun, Oct
Autumn
Mar, Jul, Nov
Winter
Apr, Aug, Dec

Effects

The Seasons have several effects upon the game. First, is the obvious aesthetic change. Each season has a slightly different look, depending on what part of Unova you're in. In addition to that, the weather will sometimes change. Normally, it may rain in one area, but it'll snow in that area in the Winter.
In addition to that, there are a few core changes. First, the wild Pokémon in each area will vary significantly from season to season. For example, some Pokémon will be common in the Summer, but rare in the Winter. This only occurs in Route 6, Route 7, Route 8, Twist Mountain, Icirrus City, Moor of Icirrus, Dragonspiral Tower and Undella Bay
Secondly, several areas will have new areas accessible within certain seasons. An example of this is just above Icirrus City where, in Winter, a snowfall allows you access to a cliffside previously unaccessible. This only occurs in Winter and in the areas of Icirrus City, Route 8, Moor of Icirrus, the Twist Mountain and Dragonspiral Tower

In addition to that, the background music will change in a variety of areas to reflect the season. Such as in Winter, you'll hear more bells in certain areas and Undella Town's music is more upbeat during Summer. The final effect is the change in the way the time of day works. In previous games, the times that the different parts of the day was static, but here, like in real life, the seasons affect what time each part of the day is.

SeasonMorningDayEveningNight
Spring05:00-09:5910:00-16:5917:00-19:5920:00-04:59
Summer04:00-08:5909:00-18:5919:00-20:5921:00-03:59
Autumn05:00-09:5910:00-16:5917:00-19:5920:00-04:59
Winter07:00-10:5911:00-15:5916:00-18:5919:00-06:59

In addition to this, the Royal Unova leaves each day at varying times.

Deerling & Sawsbuck

In addition to that, the seasons also have effects on specific Pokémon, most notable Deerling and Sawsbuck. Deerling is unique in that it has special forms that are dependant solely upon the season. Their forms change automatically when the season in-game changes when in your party so you can have multiple forms if you store it in the box. However, when you boot up the game with them in your party, they will all change. Unfortunately, there are no special effects for each form so it is a completely aesthetic change.

Spring FormSummer FormAutumn FormWinter Form

Seasonal Institute

In Route 6, there is a Seasonal Institute which is researching the effects of seasons upon Unova. One of them will ask you to show them each form of Deerling. If you do, he will give you a Leaf Stone.

Below is a list of all the features that are exclusive to a certain season.

Spring
January, May, September

  • Cynthia is findable and battleable in Undella Town
  • Caitlin & Shauntal visit Cynthia in Undella Town
Pokémon
No. Pic Name Type Abilities Base Stats Location
HP Att Def S.Att S.Def Spd
#226
Mantine
マンタイン
Swift Swim
Water Absorb
Dream World
Water Veil
65 40 70 80 140 70 Undella Town (All Seasons, Surf), Undella Bay (Spring, Summer, Autumn - Surf)
#458
Mantyke
タマンタ
Swift Swim
Water Absorb
Dream World
Water Veil
45 20 50 60 120 50 Undella Town (All Seasons, Surf), Undella Bay (Spring, Summer, Autumn - Surf)
#520
Tranquill
ハトーボー
Big Pecks
Super Luck
Dream World
Rivalry
62 77 62 50 42 65 Route 12, Yaguruma Forest, Lostlorn Forest (All Seasons), Route 6, 7, Dragonspiral Tower (Spring, Summer, Autumn)
#521
Unfezant
ケンホロウ
Big Pecks
Super Luck
Dream World
Rivalry
80 105 80 65 55 93 Route 12, Yaguruma Forest, Lostlorn Forest (All Seasons), Route 6, 7, Dragonspiral Tower (Spring, Summer, Autumn)
#536
Palpitoad
ガマガル
Swift Swim
Hydration
Dream World
Water Absorb
75 65 55 65 55 69 Route 8, Icirrus City, Sekka Swamp (Spring, Summer, Autumn)
#616
Shelmet
チョボマキ
Hydration
Shell Armor
Dream World
Dust-proof
50 40 85 40 65 25 Route 8, Icirrus City, Moor of Icirrus (Spring, Summer, Autumn)
#618
Stunfisk
マッギョ
Static
Limber
Dream World
Sand Veil
109 66 84 81 99 32 Route 8, Icirrus City (Grass - Spring, Summer Autumn) Route 8, Icirrus City (Surf/Fish)

Summer
February, June, October

Pokémon
No. Pic Name Type Abilities Base Stats Location
HP Att Def S.Att S.Def Spd
#226
Mantine
マンタイン
Swift Swim
Water Absorb
Dream World
Water Veil
65 40 70 80 140 70 Undella Town (All Seasons, Surf), Undella Bay (Spring, Summer, Autumn - Surf)
#458
Mantyke
タマンタ
Swift Swim
Water Absorb
Dream World
Water Veil
45 20 50 60 120 50 Undella Town (All Seasons, Surf), Undella Bay (Spring, Summer, Autumn - Surf)
#520
Tranquill
ハトーボー
Big Pecks
Super Luck
Dream World
Rivalry
62 77 62 50 42 65 Route 12, Yaguruma Forest, Lostlorn Forest (All Seasons), Route 6, 7, Dragonspiral Tower (Spring, Summer, Autumn)
#521
Unfezant
ケンホロウ
Big Pecks
Super Luck
Dream World
Rivalry
80 105 80 65 55 93 Route 12, Yaguruma Forest, Lostlorn Forest (All Seasons), Route 6, 7, Dragonspiral Tower (Spring, Summer, Autumn)
#536
Palpitoad
ガマガル
Swift Swim
Hydration
Dream World
Water Absorb
75 65 55 65 55 69 Route 8, Icirrus City, Sekka Swamp (Spring, Summer, Autumn)
#616
Shelmet
チョボマキ
Hydration
Shell Armor
Dream World
Dust-proof
50 40 85 40 65 25 Route 8, Icirrus City, Moor of Icirrus (Spring, Summer, Autumn)
#618
Stunfisk
マッギョ
Static
Limber
Dream World
Sand Veil
109 66 84 81 99 32 Route 8, Icirrus City (Grass - Spring, Summer Autumn) Route 8, Icirrus City (Surf/Fish)

Autumn
March, July, November

Pokemon; Pokémon
No. Pic Name Type Abilities Base Stats Location
HP Att Def S.Att S.Def Spd
#226
Mantine
マンタイン
Swift Swim
Water Absorb
Dream World
Water Veil
65 40 70 80 140 70 Undella Town (All Seasons, Surf), Undella Bay (Spring, Summer, Autumn - Surf)
#458
Mantyke
タマンタ
Swift Swim
Water Absorb
Dream World
Water Veil
45 20 50 60 120 50 Undella Town (All Seasons, Surf), Undella Bay (Spring, Summer, Autumn - Surf)
#520
Tranquill
ハトーボー
Big Pecks
Super Luck
Dream World
Rivalry
62 77 62 50 42 65 Route 12, Yaguruma Forest, Lostlorn Forest (All Seasons), Route 6, 7, Dragonspiral Tower (Spring, Summer, Autumn)
#521
Unfezant
ケンホロウ
Big Pecks
Super Luck
Dream World
Rivalry
80 105 80 65 55 93 Route 12, Yaguruma Forest, Lostlorn Forest (All Seasons), Route 6, 7, Dragonspiral Tower (Spring, Summer, Autumn)
#536
Palpitoad
ガマガル
Swift Swim
Hydration
Dream World
Water Absorb
75 65 55 65 55 69 Route 8, Icirrus City, Sekka Swamp (Spring, Summer, Autumn)
#616
Shelmet
チョボマキ
Hydration
Shell Armor
Dream World
Dust-proof
50 40 85 40 65 25 Route 8, Icirrus City, Moor of Icirrus (Spring, Summer, Autumn)
#618
Stunfisk
マッギョ
Static
Limber
Dream World
Sand Veil
109 66 84 81 99 32 Route 8, Icirrus City (Grass - Spring, Summer Autumn) Route 8, Icirrus City (Surf/Fish)

Winter
April, August, December

  • Castelia City Ice Cream shop will no longer sell Castelia Ices on Tuesdays
  • Snowfall will hit Icirrus City giving more access to areas and items including Max Potion and TinyMushrooms
  • Snowfall will hit the Twist Mountain to give you access to TM90
Pokémon
No. Pic Name Type Abilities Base Stats Location
HP Att Def S.Att S.Def Spd
#363
Spheal
タマザラシ
Thick Fat
Ice Body
Dream World
Oblivious
70 40 50 55 50 25 Undella Bay (Winter - Surf)
#364
Sealeo
トドグラー
Thick Fat
Ice Body
Dream World
Oblivious
90 60 70 75 70 45 Undella Bay (Winter - Surf)
#365
Walrein
トドゼルガ
Thick Fat
Ice Body
Dream World
Oblivious
110 80 90 95 90 65 Undella Bay (Winter - Surf)
#582
Vanillite
バニプッチ
Ice Body
Dream World
Weak Armor
36 50 50 65 60 44 Freezer Container (All Seasons) Route 6, Dragonspiral Tower (Winter)
#583
Vanillish
バニリッチ
Ice Body
Dream World
Weak Armor
51 65 65 80 75 59 Dragonspiral Tower (Winter)
#613
Cubchoo
クマシュン
Snow Cloak
Dream World
Rattled
55 70 40 60 40 40 Twist Mountain (All Seasons), Route 7, Dragonspiral Tower (Winter)
#614
Beartic
ツンベアー
Snow Cloak
Dream World
Swift Swim
95 110 80 70 80 50 Dragonspiral Tower (Winter)
 
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