Frostfall is a detailed bundle of survival mechanics centred around staving off hypothermia. The three main components of Frostfall are Hypothermia, Cold Water Survival, and Camping Equipment.

The primary objective of this mod is to add a deep, immersive level of gameplay to Skyrim, while keeping tedium to a minimum. An immersion mod should never get in the way of having fun.

Frostfall uses a sophisticated system to track your location, weather, time of day, worn clothing, and more, to determine your current condition, in a seamless and immersive way. It also features a large variety of craftable camping equipment, including craftable torches.

Download link:
Nexus Mods[www.nexusmods.com]

Skyrim is full of various kinds of food. But none of it really feel like it matters. But after installing this mod it solves the pointlessness of food stuff and also tweaks the diseases and the sleep mechanics

With this mod the diseases are no longer easily ignored nonsense. Initial syndromes are still mild (as in vanilla), but without treatment, things get worse, much worse, over time. Find a cure as soon as possible! But if you can't afford a cure, you can always rest and hope for the best, there is a chance your body will slowly fight off the disease by itself if you get enough rest.

Hunger, Thirst, Starvation will also affect your stats. For example:

Hunger has 6 stages:
Gluttony - I have eaten too much. Speed -30%.
Satiated - Health, stamina regeneration +10%.
Peckish - Ready for a snack. (no bonus or negative effect)
Hungry - Health, stamina regeneration -30%.
Very Hungry - Health, stamina regeneration -60%. Sneak is 25% harder. Attack damage -25%.
Starving - Health, stamina regeneration -90%. Carry Weight -50. Attack Damage -50%.

Thirst has 5 stages:
Quenched - Magicka, stamina regeneration +10%.
Slightly Thirsty - Ready for a drink. (no bonus or negative effect)
Thirsty - Magicka, stamina regeneration -30%.
Very Thirsty - Magicka, stamina regeneration -60%. Time between shouts +25%. Spells 25% less effective.
Dehydrated - Magicka, stamina regeneration -90%. Time between shouts +50%. Spells 50% less effective.

Overall, this is THE mod for the people who are looking for a survival experience in Skyrim.

Download link:
Nexus Mods[www.nexusmods.com]

Wet and Cold adds visual effects like steamy breath from people and creatures when outside, or snow that settles on all characters’ body. A detailed overview of this mod is as follows:

Wet Drips:
Water dynamically drips from body parts during rain and after swimming. Drips from the rain will stop if you or an actor are under some sort of ledge or cover and sound effects will play after swimming.

Soggy Feet:
A light splash sound effect and splash particles play from each footstep when it's raining and for 10 seconds after swimming. Does not work on creatures.

Steam:
Steam rises from they body after swimming in warm regions. This feature is disabled by default.

Rain Blind:
Rain drops will blind you periodically while looking up.

Go Home:
Civilian NPCs will return to their homes once it starts raining. Adults will walk briskly. Children will run. Argonians, beggars and working class NPCs will remain outdoors. If an NPC doesn't live nearby he/she will go to the inn.

Rain Gear:
All NPCs except Argonians and beggars will equip hoods during rain if their slots are free. Civilian NPCs in cities have a chance of equipping umbrellas in place of hoods (disabled by default). If Rain Gear is enabled for followers and you'd like an individual follower to opt out, create a "Wet Snowberry" at a cooking pot from regular snowberries and give one to that follower.

Cold Breaths:
Breathe out visible moisture from the nose and mouth in frigid regions (snowy/coastal) and less visible moisture in the tundra/marsh regions at night. Breaths from the nose appear in steady intervals while breaths from the mouth become visible while talking (NPCs only), running, sprinting or fighting. Creatures currently supported: giants, horses, dogs, wolves, bears, (Vale) sabrecats, falmer, werewolves, trolls, dragons, cows, hagravens, lurkers, boars and rieklings. Breaths will not appear if the actor is close to a heat source or if the actor is a vampire.

Snowy:
Snow will accumulate on hair and armor during snow fall. This effect will also appear over the whole body after swimming in a cold region. Moving near a heat source will cause the snow to melt away--even on dead bodies. A vampire's skin will be affected by the snowy/ice buildup.

Strong Winds:
If caught in a blizzard (weather classification: snowy and wind speed > 0.5) you and all nearby NPCs will receive a 15% reduction in movement speed if out in the open. Wind sound volume has also been increased during a blizzard and in mountainous regions.

Blizzard Blind:
Snow will blind you periodically during a blizzard. Keep your face down or move under a shelter to avoid. This feature is disabled by default for the player. NPCs are blinded making it more difficult for them to detect targets.

Go Home:
Most civilian NPCs will walk briskly to their homes when a blizzard starts. If an NPC doesn't live nearby he/she will go to the inn.

Cold Gear:
All NPCs except beggars will equip fur hoods and gloves in cold regions if their slots are free. If Wet and Cold - Ashes is installed, they may also equip face covers. Equip chance of face covers changes based on the time of day, weather conditions and if the NPC is a traveler. Due to their incredible resistance to the cold, Nords are more likely to equip their Cold Gear at night. NPCs will auto unequip WIC fur cloaks while sitting and reequip after standing up. This is to prevent the horrible clipping that was hurting my eyes. Note: Using a crafting station is sometimes considered "sitting" by the game. If Cold Gear is enabled for followers and you'd like an individual follower to opt out, create a "Cold Snowberry" at a cooking pot from regular snowberries and give one to that follower.

Survival Gear:
All NPCs except followers will have backpacks equipped and sometimes snowshoes while traveling outside of villages and cities. Fur backpacks are more likely to be equipped in the colder regions than leather backpacks. Leather backpacks will auto-adjust to fur cloaks to prevent clipping upon unequipping/equipping a bag. This feature will not work on NPCs with fur cloaks distributed through leveled lists.

Download link:
Nexus Mods[www.nexusmods.com]

Hunterborn changes the simple routine of kill-and-loot on animals into something more immersive. This mod has its origins in Realistic Wildlife Loot, but I wanted something more in-depth for the actual process of dressing down a kill, skinning it for its pelt, taking material from it for alchemy, and finally butchering its meat - based on the animal's weight, not just a single cut of venison.

The most significant change Hunterborn makes to the game is taking away the loot window from most wildlife. Instead, you must first choose whether to dress it (clean the carcass and prepare it for processing) where it lies, or pick up the carcass and take it back to your camp / lair / nearest vendor.

When you drop the "carcass" from your inventory, the original animal's body will appear at your feet, where again you have the choice to dress it, or pick it back up. After dressing a carcass, you're able to skin it, harvest it for ingredients like antlers, eyes, teeth, even hearts, and also butcher it for meat.

And a plethora of other features for hunter-style play: Hunting knives that can give bonuses to skinning and harvesting; 47 new alchemy ingredients that you can harvest from animals (and monsters), some with unique effects; new meat types and cooking recipes for Skyrim's wildlife; Scrimshaw crafting for animal bones; storage-where-you-need-it in the form of hunter's caches; and even foraging with location-specific results.

Download link:
Nexus Mods[www.nexusmods.com]