The Weather Forecast system is an important gameplay element in the Persona series.
Contents
Appearances
Profile
Persona 4
The weather significantly dictates the activities of the protagonist during his stay in Inaba. The protagonist can check the weather for the whole week through the television in the Dojima Residence, the student on the roof of Yasogami High School, and while meeting with the Investigation Team at Junes Department Store. In Persona 4 Golden, after a certain point, during the protagonist's free time, the screen can be tapped to bring up an overlay that shows the next two days' weather reports.
Weather Conditions
As mentioned, several options and activities are dictated by the weather.
Clear
Music: "Your Affection," sometimes replaced by ambient cicada chirping in summer.
- The protagonist can go for soccer/basketball practice.
- Child care part-time job can be done in this weather.
Cloudy
Music: "Heartbeat, Heartbreak"
- The protagonist can go for soccer/basketball practice.
- Child care part-time job can be done in this weather.
Rain/Storm
Music: Ambient sound of rainfall, with thunder during storms.
- The protagonist can increase his Knowledge score two times when studying.
- The Chinese Diner Aiya in the Central Shopping District sells the Mega Beef Bowl for 3,000 yen. Increases Understanding, Knowledge, Diligence and Courage slightly.
- The Shiroku Store Capsule Machine can be used, offering various consumables and treasure chest keys, at the cost of some yen and taking up the time slot.
- The Shiroku Store also has all items discounted.
- Daidara Metalworks will both remain open and offer a discount on rainy nights.
- Up to 5 Super Croquettes can be purchased at Souzai Daigaku.
- Bigger, more challenging fish are more likely to appear at the Samegawa Flood Plain and Shichiri Beach.
- Bug Catching at Tatsuhime Shrine is unavailable.
- Some Shadows in the Midnight Channel only appear during rainy weather.
- Shadows have a higher chance of dropping rare items.
- The Rainy Death skill has an increased Critical rate in rainy weather.
- Most daytime Social Links are unavailable, except for Sun, Hermit and Fortune. Nighttime Social Links are unaffected.
- Most outdoor quest NPCs are absent.
- Reading books in the protagonist's room during rainy weather can provide a slight social stat improvement. This can happen whether the book is completed or not.
Fog
Music: "Omen"
- Seen both after the cutoff date for a rescue mission and towards the end of the game.
Persona 4 Golden
Snow
Music: "Snowflakes"
- Seen after New Year's Day until Valentines Day.
- Gardening and bug catching are no longer possible, but the protagonist can dig up bugs in the Dojima garden.
Persona 5 / Royal
- For more information on how the weather is arranged on the calendar, see Calendar (Persona 5)
The available weather conditions are 
clear, 
cloudy, 
rain and 
snow. Weather influences people's mood and subsequently changes the structure of Mementos. Rain also changes the overworld music.
Weather influences certain activities, via boosting the results of performing them, or affecting their availability. Rain in particular also makes most Confidants constantly available, but completely disabling others.
There are particular shops which only sell certain items when it's raining.
"Beneath the Mask -Rain, (Instrumental Version)-" plays during all rainy days regardless of story progress.
In battle, although clear and cloudy have no influence, if the weather is rainy or snowy, the appearance rate of enemies, treasure chests and search objects in Mementos will be increased.
Certain passive skills only function in certain weather. These include Ambient Aid and Climate Decorum.
In Persona 5 Royal, more types of items can spawn from search objects in Mementos if the weather is bad (e.g. it's rainy or snowy.) Additionally, if a Persona has the Trait Gloomy Child, they will be able to use Ambient Aid and Climate Decorum in normal weather as well.
Weather Warning
Besides these, secondary, special weather can occur subsequently with the general weather. They are labeled as "pollen warning," "heat island" and "guerrilla rainstorm," "Flu Season" and "Cold Wave." Weather warnings have the regular effects of rainy or snowy weather, but each weather warning has additional effects on battles or appearance rates in Mementos:
| Weather warning | Effect | Dates |
|---|---|---|
| Thunderstorm | Rarer Shadows & Treasure Demons have a higher chance of appearing. Treasure chests have a higher chance of appearing. |
|
| Torrential rain | Rarer Shadows & Treasure Demons have a higher chance of appearing. Treasure chests have a higher chance of appearing. Odds are much higher in comparison to thunderstorm. |
7/27, 7/29 (night), 8/1 (day), 8/3, 8/8 (night), 8/10 (night), 8/11 (day), 8/16 (day), 8/17 (night), 8/18 (day), 8/26 (night), 8/27 (night) |
| Pollen warning | Shadows may be afflicted with Sleep when entering combat. Shadows may request Eye Drops in negotiation. |
5/9, 5/10, 5/20, 5/23, 5/26, 5/31, 6/1, 6/2 |
| Heat wave | Vending Machines will not have any drinks. Shadows may be afflicted with Burn when entering combat. Shadows may request drinks in negotiation. |
Daytime only: 7/26, 7/28, 7/30, 7/31, 8/2, 8/4, 8/6, 8/7, 8/9, 8/12, 8/15, 8/17, 8/30 |
| Tropical night | Vending Machines will not have any drinks. | Nighttime only: 7/30, 7/31, 8/2, 8/4, 8/6, 8/7, 8/9, 8/12, 8/15, 8/17, 8/22 - 8/26, 8/28, 8/30 |
| Flu season | Shadows may be afflicted with Despair upon entering combat. Shadows may request Hand Warmalizers in negotiation. |
11/13, 11/14, 11/15, 12/8, 12/9 |
| Cold wave (P5R) |
Shadows may be afflicted with Freeze upon entering combat. | 1/26, 1/27 |
